Home / 5,278.65-7,918.38-1,580.61

Finding the Fourth Proportional to 5,278.65, 7,918.38 and 1,580.61

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Solution

The fourth proportional to 5,278.65, 7,918.38 and 1,580.61 is: 2,371.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,278.65 : 7,918.38 = 1,580.61 : x
  2. Step 2: Convert to fraction form
    5,278.65/7,918.38 = 1,580.61/x
  3. Step 3: Cross multiply
    5,278.65x = 7,918.38 × 1,580.61
  4. Step 4: Simplify right side
    5,278.65x = 12,515,870.61
  5. Step 5: Solve for x
    x = 12,515,870.61/5,278.65
  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.