Home / 8,422.11-12,616.75-5,127.03

Finding the Fourth Proportional to 8,422.11, 12,616.75 and 5,127.03

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Solution

The fourth proportional to 8,422.11, 12,616.75 and 5,127.03 is: 7,680.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,422.11 : 12,616.75 = 5,127.03 : x
  2. Step 2: Convert to fraction form
    8,422.11/12,616.75 = 5,127.03/x
  3. Step 3: Cross multiply
    8,422.11x = 12,616.75 × 5,127.03
  4. Step 4: Simplify right side
    8,422.11x = 64,686,455.75
  5. Step 5: Solve for x
    x = 64,686,455.75/8,422.11
  6. Step 6: Final answer
    x = 7,680.55

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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.