Home / 5,278.58-7,917.85-1,580.81

Finding the Fourth Proportional to 5,278.58, 7,917.85 and 1,580.81

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Solution

The fourth proportional to 5,278.58, 7,917.85 and 1,580.81 is: 2,371.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.58 : 7,917.85 = 1,580.81 : x
  2. Step 2: Convert to fraction form
    5,278.58/7,917.85 = 1,580.81/x
  3. Step 3: Cross multiply
    5,278.58x = 7,917.85 × 1,580.81
  4. Step 4: Simplify right side
    5,278.58x = 12,516,616.46
  5. Step 5: Solve for x
    x = 12,516,616.46/5,278.58
  6. Step 6: Final answer
    x = 2,371.21

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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.