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Finding the Fourth Proportional to 2,572.81, 3,550.48 and 1,393.88

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Solution

The fourth proportional to 2,572.81, 3,550.48 and 1,393.88 is: 1,923.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.81 : 3,550.48 = 1,393.88 : x
  2. Step 2: Convert to fraction form
    2,572.81/3,550.48 = 1,393.88/x
  3. Step 3: Cross multiply
    2,572.81x = 3,550.48 × 1,393.88
  4. Step 4: Simplify right side
    2,572.81x = 4,948,929.67
  5. Step 5: Solve for x
    x = 4,948,929.67/2,572.81
  6. Step 6: Final answer
    x = 1,923.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.