Home / 5,278.83-7,917.95-1,581.15

Finding the Fourth Proportional to 5,278.83, 7,917.95 and 1,581.15

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Solution

The fourth proportional to 5,278.83, 7,917.95 and 1,581.15 is: 2,371.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.83 : 7,917.95 = 1,581.15 : x
  2. Step 2: Convert to fraction form
    5,278.83/7,917.95 = 1,581.15/x
  3. Step 3: Cross multiply
    5,278.83x = 7,917.95 × 1,581.15
  4. Step 4: Simplify right side
    5,278.83x = 12,519,458.74
  5. Step 5: Solve for x
    x = 12,519,458.74/5,278.83
  6. Step 6: Final answer
    x = 2,371.64

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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.