Home / 5,278.28-7,917.51-1,580.56

Finding the Fourth Proportional to 5,278.28, 7,917.51 and 1,580.56

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Solution

The fourth proportional to 5,278.28, 7,917.51 and 1,580.56 is: 2,370.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.28 : 7,917.51 = 1,580.56 : x
  2. Step 2: Convert to fraction form
    5,278.28/7,917.51 = 1,580.56/x
  3. Step 3: Cross multiply
    5,278.28x = 7,917.51 × 1,580.56
  4. Step 4: Simplify right side
    5,278.28x = 12,514,099.61
  5. Step 5: Solve for x
    x = 12,514,099.61/5,278.28
  6. Step 6: Final answer
    x = 2,370.87

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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.