Home / 8,140.32-12,207.04-3,520

Finding the Fourth Proportional to 8,140.32, 12,207.04 and 3,520

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Solution

The fourth proportional to 8,140.32, 12,207.04 and 3,520 is: 5,278.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,140.32 : 12,207.04 = 3,520 : x
  2. Step 2: Convert to fraction form
    8,140.32/12,207.04 = 3,520/x
  3. Step 3: Cross multiply
    8,140.32x = 12,207.04 × 3,520
  4. Step 4: Simplify right side
    8,140.32x = 42,968,780.80
  5. Step 5: Solve for x
    x = 42,968,780.80/8,140.32
  6. Step 6: Final answer
    x = 5,278.51

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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.