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Finding the Fourth Proportional to 8,706.74, 12,015.57 and 4,728.11

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Solution

The fourth proportional to 8,706.74, 12,015.57 and 4,728.11 is: 6,524.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,706.74 : 12,015.57 = 4,728.11 : x
  2. Step 2: Convert to fraction form
    8,706.74/12,015.57 = 4,728.11/x
  3. Step 3: Cross multiply
    8,706.74x = 12,015.57 × 4,728.11
  4. Step 4: Simplify right side
    8,706.74x = 56,810,876.59
  5. Step 5: Solve for x
    x = 56,810,876.59/8,706.74
  6. Step 6: Final answer
    x = 6,524.93

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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.