Home / 8,772.08-13,158.12-6,434.60

Finding the Fourth Proportional to 8,772.08, 13,158.12 and 6,434.60

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Solution

The fourth proportional to 8,772.08, 13,158.12 and 6,434.60 is: 9,651.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,772.08 : 13,158.12 = 6,434.60 : x
  2. Step 2: Convert to fraction form
    8,772.08/13,158.12 = 6,434.60/x
  3. Step 3: Cross multiply
    8,772.08x = 13,158.12 × 6,434.60
  4. Step 4: Simplify right side
    8,772.08x = 84,667,238.95
  5. Step 5: Solve for x
    x = 84,667,238.95/8,772.08
  6. Step 6: Final answer
    x = 9,651.90

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Similar ratio
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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.