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Finding the Fourth Proportional to 6,654.48, 9,981.72 and 3,143.33

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Solution

The fourth proportional to 6,654.48, 9,981.72 and 3,143.33 is: 4,715.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,654.48 : 9,981.72 = 3,143.33 : x
  2. Step 2: Convert to fraction form
    6,654.48/9,981.72 = 3,143.33/x
  3. Step 3: Cross multiply
    6,654.48x = 9,981.72 × 3,143.33
  4. Step 4: Simplify right side
    6,654.48x = 31,375,824.21
  5. Step 5: Solve for x
    x = 31,375,824.21/6,654.48
  6. Step 6: Final answer
    x = 4,715.00

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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.