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Finding the Fourth Proportional to 9,988.92, 14,979.60 and 3,324.24

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Solution

The fourth proportional to 9,988.92, 14,979.60 and 3,324.24 is: 4,985.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,988.92 : 14,979.60 = 3,324.24 : x
  2. Step 2: Convert to fraction form
    9,988.92/14,979.60 = 3,324.24/x
  3. Step 3: Cross multiply
    9,988.92x = 14,979.60 × 3,324.24
  4. Step 4: Simplify right side
    9,988.92x = 49,795,785.50
  5. Step 5: Solve for x
    x = 49,795,785.50/9,988.92
  6. Step 6: Final answer
    x = 4,985.10

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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.