Home / 8,126.32-12,181.28-4,420.88

Finding the Fourth Proportional to 8,126.32, 12,181.28 and 4,420.88

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Solution

The fourth proportional to 8,126.32, 12,181.28 and 4,420.88 is: 6,626.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,126.32 : 12,181.28 = 4,420.88 : x
  2. Step 2: Convert to fraction form
    8,126.32/12,181.28 = 4,420.88/x
  3. Step 3: Cross multiply
    8,126.32x = 12,181.28 × 4,420.88
  4. Step 4: Simplify right side
    8,126.32x = 53,851,894.12
  5. Step 5: Solve for x
    x = 53,851,894.12/8,126.32
  6. Step 6: Final answer
    x = 6,626.85

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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.