Home / 5,618.56-8,427.80-4,387

Finding the Fourth Proportional to 5,618.56, 8,427.80 and 4,387

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Solution

The fourth proportional to 5,618.56, 8,427.80 and 4,387 is: 6,580.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,618.56 : 8,427.80 = 4,387 : x
  2. Step 2: Convert to fraction form
    5,618.56/8,427.80 = 4,387/x
  3. Step 3: Cross multiply
    5,618.56x = 8,427.80 × 4,387
  4. Step 4: Simplify right side
    5,618.56x = 36,972,758.60
  5. Step 5: Solve for x
    x = 36,972,758.60/5,618.56
  6. Step 6: Final answer
    x = 6,580.47

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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.