Home / 8,106.24-12,159.36-3,486

Finding the Fourth Proportional to 8,106.24, 12,159.36 and 3,486

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Solution

The fourth proportional to 8,106.24, 12,159.36 and 3,486 is: 5,229

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,106.24 : 12,159.36 = 3,486 : x
  2. Step 2: Convert to fraction form
    8,106.24/12,159.36 = 3,486/x
  3. Step 3: Cross multiply
    8,106.24x = 12,159.36 × 3,486
  4. Step 4: Simplify right side
    8,106.24x = 42,387,528.96
  5. Step 5: Solve for x
    x = 42,387,528.96/8,106.24
  6. Step 6: Final answer
    x = 5,229

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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.