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Finding the Fourth Proportional to 2,701.20, 4,051.32 and 752.92

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Solution

The fourth proportional to 2,701.20, 4,051.32 and 752.92 is: 1,129.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,701.20 : 4,051.32 = 752.92 : x
  2. Step 2: Convert to fraction form
    2,701.20/4,051.32 = 752.92/x
  3. Step 3: Cross multiply
    2,701.20x = 4,051.32 × 752.92
  4. Step 4: Simplify right side
    2,701.20x = 3,050,319.85
  5. Step 5: Solve for x
    x = 3,050,319.85/2,701.20
  6. Step 6: Final answer
    x = 1,129.25

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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.