Home / 5,380.40-8,070.54-1,484.78

Finding the Fourth Proportional to 5,380.40, 8,070.54 and 1,484.78

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Solution

The fourth proportional to 5,380.40, 8,070.54 and 1,484.78 is: 2,227.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.40 : 8,070.54 = 1,484.78 : x
  2. Step 2: Convert to fraction form
    5,380.40/8,070.54 = 1,484.78/x
  3. Step 3: Cross multiply
    5,380.40x = 8,070.54 × 1,484.78
  4. Step 4: Simplify right side
    5,380.40x = 11,982,976.38
  5. Step 5: Solve for x
    x = 11,982,976.38/5,380.40
  6. Step 6: Final answer
    x = 2,227.15

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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.