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Finding the Fourth Proportional to 2,695.30, 4,043.01 and 747.49

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Solution

The fourth proportional to 2,695.30, 4,043.01 and 747.49 is: 1,121.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,695.30 : 4,043.01 = 747.49 : x
  2. Step 2: Convert to fraction form
    2,695.30/4,043.01 = 747.49/x
  3. Step 3: Cross multiply
    2,695.30x = 4,043.01 × 747.49
  4. Step 4: Simplify right side
    2,695.30x = 3,022,105.81
  5. Step 5: Solve for x
    x = 3,022,105.81/2,695.30
  6. Step 6: Final answer
    x = 1,121.25

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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.