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Finding the Fourth Proportional to 5,807.76, 8,689.96 and 3,459.20

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Solution

The fourth proportional to 5,807.76, 8,689.96 and 3,459.20 is: 5,175.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,807.76 : 8,689.96 = 3,459.20 : x
  2. Step 2: Convert to fraction form
    5,807.76/8,689.96 = 3,459.20/x
  3. Step 3: Cross multiply
    5,807.76x = 8,689.96 × 3,459.20
  4. Step 4: Simplify right side
    5,807.76x = 30,060,309.63
  5. Step 5: Solve for x
    x = 30,060,309.63/5,807.76
  6. Step 6: Final answer
    x = 5,175.89

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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.