Home / 5,280.16-7,917.90-1,581.16

Finding the Fourth Proportional to 5,280.16, 7,917.90 and 1,581.16

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Solution

The fourth proportional to 5,280.16, 7,917.90 and 1,581.16 is: 2,371.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.16 : 7,917.90 = 1,581.16 : x
  2. Step 2: Convert to fraction form
    5,280.16/7,917.90 = 1,581.16/x
  3. Step 3: Cross multiply
    5,280.16x = 7,917.90 × 1,581.16
  4. Step 4: Simplify right side
    5,280.16x = 12,519,466.76
  5. Step 5: Solve for x
    x = 12,519,466.76/5,280.16
  6. Step 6: Final answer
    x = 2,371.04

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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.