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Finding the Fourth Proportional to 6,660.33, 9,990.47 and 6,254.35

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Solution

The fourth proportional to 6,660.33, 9,990.47 and 6,254.35 is: 9,381.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.33 : 9,990.47 = 6,254.35 : x
  2. Step 2: Convert to fraction form
    6,660.33/9,990.47 = 6,254.35/x
  3. Step 3: Cross multiply
    6,660.33x = 9,990.47 × 6,254.35
  4. Step 4: Simplify right side
    6,660.33x = 62,483,886.70
  5. Step 5: Solve for x
    x = 62,483,886.70/6,660.33
  6. Step 6: Final answer
    x = 9,381.51

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.