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Finding the Fourth Proportional to 5,807.40, 8,711.10 and 4,057.80

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Solution

The fourth proportional to 5,807.40, 8,711.10 and 4,057.80 is: 6,086.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,807.40 : 8,711.10 = 4,057.80 : x
  2. Step 2: Convert to fraction form
    5,807.40/8,711.10 = 4,057.80/x
  3. Step 3: Cross multiply
    5,807.40x = 8,711.10 × 4,057.80
  4. Step 4: Simplify right side
    5,807.40x = 35,347,901.58
  5. Step 5: Solve for x
    x = 35,347,901.58/5,807.40
  6. Step 6: Final answer
    x = 6,086.70

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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.