Home / 1,429.60-2,148.44-1,331.12

Finding the Fourth Proportional to 1,429.60, 2,148.44 and 1,331.12

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Solution

The fourth proportional to 1,429.60, 2,148.44 and 1,331.12 is: 2,000.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,429.60 : 2,148.44 = 1,331.12 : x
  2. Step 2: Convert to fraction form
    1,429.60/2,148.44 = 1,331.12/x
  3. Step 3: Cross multiply
    1,429.60x = 2,148.44 × 1,331.12
  4. Step 4: Simplify right side
    1,429.60x = 2,859,831.45
  5. Step 5: Solve for x
    x = 2,859,831.45/1,429.60
  6. Step 6: Final answer
    x = 2,000.44

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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.