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Finding the Fourth Proportional to 8,863.89, 12,232.20 and 4,885.21

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Solution

The fourth proportional to 8,863.89, 12,232.20 and 4,885.21 is: 6,741.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,863.89 : 12,232.20 = 4,885.21 : x
  2. Step 2: Convert to fraction form
    8,863.89/12,232.20 = 4,885.21/x
  3. Step 3: Cross multiply
    8,863.89x = 12,232.20 × 4,885.21
  4. Step 4: Simplify right side
    8,863.89x = 59,756,865.76
  5. Step 5: Solve for x
    x = 59,756,865.76/8,863.89
  6. Step 6: Final answer
    x = 6,741.61

Related Problems

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Half scale
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Double scale
Find fourth proportional to 8,864.89, 12,233.58 and 4,886.21
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.