Home / 1,424.90-2,135.35-1,132.90

Finding the Fourth Proportional to 1,424.90, 2,135.35 and 1,132.90

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Solution

The fourth proportional to 1,424.90, 2,135.35 and 1,132.90 is: 1,697.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,424.90 : 2,135.35 = 1,132.90 : x
  2. Step 2: Convert to fraction form
    1,424.90/2,135.35 = 1,132.90/x
  3. Step 3: Cross multiply
    1,424.90x = 2,135.35 × 1,132.90
  4. Step 4: Simplify right side
    1,424.90x = 2,419,138.02
  5. Step 5: Solve for x
    x = 2,419,138.02/1,424.90
  6. Step 6: Final answer
    x = 1,697.76

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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.