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Finding the Fourth Proportional to 9,944.80, 14,915.40 and 6,240.40

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Solution

The fourth proportional to 9,944.80, 14,915.40 and 6,240.40 is: 9,359.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,944.80 : 14,915.40 = 6,240.40 : x
  2. Step 2: Convert to fraction form
    9,944.80/14,915.40 = 6,240.40/x
  3. Step 3: Cross multiply
    9,944.80x = 14,915.40 × 6,240.40
  4. Step 4: Simplify right side
    9,944.80x = 93,078,062.16
  5. Step 5: Solve for x
    x = 93,078,062.16/9,944.80
  6. Step 6: Final answer
    x = 9,359.47

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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.