Home / 8,272.56-12,422.10-7,666.20

Finding the Fourth Proportional to 8,272.56, 12,422.10 and 7,666.20

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Solution

The fourth proportional to 8,272.56, 12,422.10 and 7,666.20 is: 11,511.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.56 : 12,422.10 = 7,666.20 : x
  2. Step 2: Convert to fraction form
    8,272.56/12,422.10 = 7,666.20/x
  3. Step 3: Cross multiply
    8,272.56x = 12,422.10 × 7,666.20
  4. Step 4: Simplify right side
    8,272.56x = 95,230,303.02
  5. Step 5: Solve for x
    x = 95,230,303.02/8,272.56
  6. Step 6: Final answer
    x = 11,511.59

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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.