Home / 8,159.10-12,231.45-7,284.30

Finding the Fourth Proportional to 8,159.10, 12,231.45 and 7,284.30

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Solution

The fourth proportional to 8,159.10, 12,231.45 and 7,284.30 is: 10,920.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159.10 : 12,231.45 = 7,284.30 : x
  2. Step 2: Convert to fraction form
    8,159.10/12,231.45 = 7,284.30/x
  3. Step 3: Cross multiply
    8,159.10x = 12,231.45 × 7,284.30
  4. Step 4: Simplify right side
    8,159.10x = 89,097,551.24
  5. Step 5: Solve for x
    x = 89,097,551.24/8,159.10
  6. Step 6: Final answer
    x = 10,920.02

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1.5x scale

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.