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Finding the Fourth Proportional to 5,793.20, 8,689.80 and 5,428.70

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Solution

The fourth proportional to 5,793.20, 8,689.80 and 5,428.70 is: 8,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,793.20 : 8,689.80 = 5,428.70 : x
  2. Step 2: Convert to fraction form
    5,793.20/8,689.80 = 5,428.70/x
  3. Step 3: Cross multiply
    5,793.20x = 8,689.80 × 5,428.70
  4. Step 4: Simplify right side
    5,793.20x = 47,174,317.26
  5. Step 5: Solve for x
    x = 47,174,317.26/5,793.20
  6. Step 6: Final answer
    x = 8,143.05

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Similar ratio
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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.