Home / 5,330.02-7,988.40-3,382.78

Finding the Fourth Proportional to 5,330.02, 7,988.40 and 3,382.78

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Solution

The fourth proportional to 5,330.02, 7,988.40 and 3,382.78 is: 5,069.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,330.02 : 7,988.40 = 3,382.78 : x
  2. Step 2: Convert to fraction form
    5,330.02/7,988.40 = 3,382.78/x
  3. Step 3: Cross multiply
    5,330.02x = 7,988.40 × 3,382.78
  4. Step 4: Simplify right side
    5,330.02x = 27,022,999.75
  5. Step 5: Solve for x
    x = 27,022,999.75/5,330.02
  6. Step 6: Final answer
    x = 5,069.96

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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.