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Finding the Fourth Proportional to 3,988.76, 5,989.62 and 2,459.48

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Solution

The fourth proportional to 3,988.76, 5,989.62 and 2,459.48 is: 3,693.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,988.76 : 5,989.62 = 2,459.48 : x
  2. Step 2: Convert to fraction form
    3,988.76/5,989.62 = 2,459.48/x
  3. Step 3: Cross multiply
    3,988.76x = 5,989.62 × 2,459.48
  4. Step 4: Simplify right side
    3,988.76x = 14,731,350.60
  5. Step 5: Solve for x
    x = 14,731,350.60/3,988.76
  6. Step 6: Final answer
    x = 3,693.22

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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.