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Finding the Fourth Proportional to 6,398.71, 9,600.81 and 3,479.11

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Solution

The fourth proportional to 6,398.71, 9,600.81 and 3,479.11 is: 5,220.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,398.71 : 9,600.81 = 3,479.11 : x
  2. Step 2: Convert to fraction form
    6,398.71/9,600.81 = 3,479.11/x
  3. Step 3: Cross multiply
    6,398.71x = 9,600.81 × 3,479.11
  4. Step 4: Simplify right side
    6,398.71x = 33,402,274.08
  5. Step 5: Solve for x
    x = 33,402,274.08/6,398.71
  6. Step 6: Final answer
    x = 5,220.16

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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.