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Finding the Fourth Proportional to 3,917.60, 5,876.88 and 1,726.88

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Solution

The fourth proportional to 3,917.60, 5,876.88 and 1,726.88 is: 2,590.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,917.60 : 5,876.88 = 1,726.88 : x
  2. Step 2: Convert to fraction form
    3,917.60/5,876.88 = 1,726.88/x
  3. Step 3: Cross multiply
    3,917.60x = 5,876.88 × 1,726.88
  4. Step 4: Simplify right side
    3,917.60x = 10,148,666.53
  5. Step 5: Solve for x
    x = 10,148,666.53/3,917.60
  6. Step 6: Final answer
    x = 2,590.53

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1.5x scale

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.