Home / 5,621.25-8,432.28-2,158.50

Finding the Fourth Proportional to 5,621.25, 8,432.28 and 2,158.50

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Solution

The fourth proportional to 5,621.25, 8,432.28 and 2,158.50 is: 3,237.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621.25 : 8,432.28 = 2,158.50 : x
  2. Step 2: Convert to fraction form
    5,621.25/8,432.28 = 2,158.50/x
  3. Step 3: Cross multiply
    5,621.25x = 8,432.28 × 2,158.50
  4. Step 4: Simplify right side
    5,621.25x = 18,201,084.47
  5. Step 5: Solve for x
    x = 18,201,084.47/5,621.25
  6. Step 6: Final answer
    x = 3,237.91

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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.