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Finding the Fourth Proportional to 5,700.40, 8,545.20 and 5,117.20

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Solution

The fourth proportional to 5,700.40, 8,545.20 and 5,117.20 is: 7,670.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,700.40 : 8,545.20 = 5,117.20 : x
  2. Step 2: Convert to fraction form
    5,700.40/8,545.20 = 5,117.20/x
  3. Step 3: Cross multiply
    5,700.40x = 8,545.20 × 5,117.20
  4. Step 4: Simplify right side
    5,700.40x = 43,727,497.44
  5. Step 5: Solve for x
    x = 43,727,497.44/5,700.40
  6. Step 6: Final answer
    x = 7,670.95

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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.