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Finding the Fourth Proportional to 6,648.78, 9,952.11 and 3,718.20

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Solution

The fourth proportional to 6,648.78, 9,952.11 and 3,718.20 is: 5,565.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648.78 : 9,952.11 = 3,718.20 : x
  2. Step 2: Convert to fraction form
    6,648.78/9,952.11 = 3,718.20/x
  3. Step 3: Cross multiply
    6,648.78x = 9,952.11 × 3,718.20
  4. Step 4: Simplify right side
    6,648.78x = 37,003,935.40
  5. Step 5: Solve for x
    x = 37,003,935.40/6,648.78
  6. Step 6: Final answer
    x = 5,565.52

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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.