Home / 1,280.62-1,917.69-1,023.58

Finding the Fourth Proportional to 1,280.62, 1,917.69 and 1,023.58

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Solution

The fourth proportional to 1,280.62, 1,917.69 and 1,023.58 is: 1,532.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280.62 : 1,917.69 = 1,023.58 : x
  2. Step 2: Convert to fraction form
    1,280.62/1,917.69 = 1,023.58/x
  3. Step 3: Cross multiply
    1,280.62x = 1,917.69 × 1,023.58
  4. Step 4: Simplify right side
    1,280.62x = 1,962,909.13
  5. Step 5: Solve for x
    x = 1,962,909.13/1,280.62
  6. Step 6: Final answer
    x = 1,532.78

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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.