Home / 9,170.08-12,645.36-8,158.56

Finding the Fourth Proportional to 9,170.08, 12,645.36 and 8,158.56

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Solution

The fourth proportional to 9,170.08, 12,645.36 and 8,158.56 is: 11,250.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,170.08 : 12,645.36 = 8,158.56 : x
  2. Step 2: Convert to fraction form
    9,170.08/12,645.36 = 8,158.56/x
  3. Step 3: Cross multiply
    9,170.08x = 12,645.36 × 8,158.56
  4. Step 4: Simplify right side
    9,170.08x = 103,167,928.28
  5. Step 5: Solve for x
    x = 103,167,928.28/9,170.08
  6. Step 6: Final answer
    x = 11,250.49

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.