Home / 5,438.86-8,158.56-2,319.28

Finding the Fourth Proportional to 5,438.86, 8,158.56 and 2,319.28

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Solution

The fourth proportional to 5,438.86, 8,158.56 and 2,319.28 is: 3,479.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,438.86 : 8,158.56 = 2,319.28 : x
  2. Step 2: Convert to fraction form
    5,438.86/8,158.56 = 2,319.28/x
  3. Step 3: Cross multiply
    5,438.86x = 8,158.56 × 2,319.28
  4. Step 4: Simplify right side
    5,438.86x = 18,921,985.04
  5. Step 5: Solve for x
    x = 18,921,985.04/5,438.86
  6. Step 6: Final answer
    x = 3,479.04

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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.