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Finding the Fourth Proportional to 5,288.76, 7,287.84 and 3,952.80

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Solution

The fourth proportional to 5,288.76, 7,287.84 and 3,952.80 is: 5,446.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,288.76 : 7,287.84 = 3,952.80 : x
  2. Step 2: Convert to fraction form
    5,288.76/7,287.84 = 3,952.80/x
  3. Step 3: Cross multiply
    5,288.76x = 7,287.84 × 3,952.80
  4. Step 4: Simplify right side
    5,288.76x = 28,807,373.95
  5. Step 5: Solve for x
    x = 28,807,373.95/5,288.76
  6. Step 6: Final answer
    x = 5,446.91

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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.