Home / 5,180.68-7,770.98-1,285.08

Finding the Fourth Proportional to 5,180.68, 7,770.98 and 1,285.08

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Solution

The fourth proportional to 5,180.68, 7,770.98 and 1,285.08 is: 1,927.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.68 : 7,770.98 = 1,285.08 : x
  2. Step 2: Convert to fraction form
    5,180.68/7,770.98 = 1,285.08/x
  3. Step 3: Cross multiply
    5,180.68x = 7,770.98 × 1,285.08
  4. Step 4: Simplify right side
    5,180.68x = 9,986,330.98
  5. Step 5: Solve for x
    x = 9,986,330.98/5,180.68
  6. Step 6: Final answer
    x = 1,927.61

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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.