Home / 1,438.86-2,155.45-1,337.61

Finding the Fourth Proportional to 1,438.86, 2,155.45 and 1,337.61

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Solution

The fourth proportional to 1,438.86, 2,155.45 and 1,337.61 is: 2,003.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.86 : 2,155.45 = 1,337.61 : x
  2. Step 2: Convert to fraction form
    1,438.86/2,155.45 = 1,337.61/x
  3. Step 3: Cross multiply
    1,438.86x = 2,155.45 × 1,337.61
  4. Step 4: Simplify right side
    1,438.86x = 2,883,151.47
  5. Step 5: Solve for x
    x = 2,883,151.47/1,438.86
  6. Step 6: Final answer
    x = 2,003.77

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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.