Home / 5,621-8,432.86-2,158.26

Finding the Fourth Proportional to 5,621, 8,432.86 and 2,158.26

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Solution

The fourth proportional to 5,621, 8,432.86 and 2,158.26 is: 3,237.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,621 : 8,432.86 = 2,158.26 : x
  2. Step 2: Convert to fraction form
    5,621/8,432.86 = 2,158.26/x
  3. Step 3: Cross multiply
    5,621x = 8,432.86 × 2,158.26
  4. Step 4: Simplify right side
    5,621x = 18,200,304.42
  5. Step 5: Solve for x
    x = 18,200,304.42/5,621
  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.