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Finding the Fourth Proportional to 6,616.92, 9,925.38 and 3,143.64

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Solution

The fourth proportional to 6,616.92, 9,925.38 and 3,143.64 is: 4,715.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,616.92 : 9,925.38 = 3,143.64 : x
  2. Step 2: Convert to fraction form
    6,616.92/9,925.38 = 3,143.64/x
  3. Step 3: Cross multiply
    6,616.92x = 9,925.38 × 3,143.64
  4. Step 4: Simplify right side
    6,616.92x = 31,201,821.58
  5. Step 5: Solve for x
    x = 31,201,821.58/6,616.92
  6. Step 6: Final answer
    x = 4,715.46

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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.