Home / 9,154.75-12,633.40-5,121.67

Finding the Fourth Proportional to 9,154.75, 12,633.40 and 5,121.67

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Solution

The fourth proportional to 9,154.75, 12,633.40 and 5,121.67 is: 7,067.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,154.75 : 12,633.40 = 5,121.67 : x
  2. Step 2: Convert to fraction form
    9,154.75/12,633.40 = 5,121.67/x
  3. Step 3: Cross multiply
    9,154.75x = 12,633.40 × 5,121.67
  4. Step 4: Simplify right side
    9,154.75x = 64,704,105.78
  5. Step 5: Solve for x
    x = 64,704,105.78/9,154.75
  6. Step 6: Final answer
    x = 7,067.82

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Half scale
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Double scale
Find fourth proportional to 9,155.75, 12,634.78 and 5,122.67
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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.