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Finding the Fourth Proportional to 6,291.28, 8,681.92 and 3,496.80

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Solution

The fourth proportional to 6,291.28, 8,681.92 and 3,496.80 is: 4,825.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.28 : 8,681.92 = 3,496.80 : x
  2. Step 2: Convert to fraction form
    6,291.28/8,681.92 = 3,496.80/x
  3. Step 3: Cross multiply
    6,291.28x = 8,681.92 × 3,496.80
  4. Step 4: Simplify right side
    6,291.28x = 30,358,937.86
  5. Step 5: Solve for x
    x = 30,358,937.86/6,291.28
  6. Step 6: Final answer
    x = 4,825.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.