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Finding the Fourth Proportional to 6,640.36, 9,882.14 and 6,418.92

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Solution

The fourth proportional to 6,640.36, 9,882.14 and 6,418.92 is: 9,552.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,640.36 : 9,882.14 = 6,418.92 : x
  2. Step 2: Convert to fraction form
    6,640.36/9,882.14 = 6,418.92/x
  3. Step 3: Cross multiply
    6,640.36x = 9,882.14 × 6,418.92
  4. Step 4: Simplify right side
    6,640.36x = 63,432,666.09
  5. Step 5: Solve for x
    x = 63,432,666.09/6,640.36
  6. Step 6: Final answer
    x = 9,552.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.