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Finding the Fourth Proportional to 3,770.32, 5,652.10 and 1,920.40

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Solution

The fourth proportional to 3,770.32, 5,652.10 and 1,920.40 is: 2,878.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,770.32 : 5,652.10 = 1,920.40 : x
  2. Step 2: Convert to fraction form
    3,770.32/5,652.10 = 1,920.40/x
  3. Step 3: Cross multiply
    3,770.32x = 5,652.10 × 1,920.40
  4. Step 4: Simplify right side
    3,770.32x = 10,854,292.84
  5. Step 5: Solve for x
    x = 10,854,292.84/3,770.32
  6. Step 6: Final answer
    x = 2,878.88

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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.