Home / 5,180.70-7,770.96-1,285.08

Finding the Fourth Proportional to 5,180.70, 7,770.96 and 1,285.08

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Solution

The fourth proportional to 5,180.70, 7,770.96 and 1,285.08 is: 1,927.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180.70 : 7,770.96 = 1,285.08 : x
  2. Step 2: Convert to fraction form
    5,180.70/7,770.96 = 1,285.08/x
  3. Step 3: Cross multiply
    5,180.70x = 7,770.96 × 1,285.08
  4. Step 4: Simplify right side
    5,180.70x = 9,986,305.28
  5. Step 5: Solve for x
    x = 9,986,305.28/5,180.70
  6. Step 6: Final answer
    x = 1,927.60

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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.