Home / 1,451.18-2,002.85-1,229.78

Finding the Fourth Proportional to 1,451.18, 2,002.85 and 1,229.78

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Solution

The fourth proportional to 1,451.18, 2,002.85 and 1,229.78 is: 1,697.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.18 : 2,002.85 = 1,229.78 : x
  2. Step 2: Convert to fraction form
    1,451.18/2,002.85 = 1,229.78/x
  3. Step 3: Cross multiply
    1,451.18x = 2,002.85 × 1,229.78
  4. Step 4: Simplify right side
    1,451.18x = 2,463,048.71
  5. Step 5: Solve for x
    x = 2,463,048.71/1,451.18
  6. Step 6: Final answer
    x = 1,697.28

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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.