Home / 7,151.20-10,726.80-5,911.90

Finding the Fourth Proportional to 7,151.20, 10,726.80 and 5,911.90

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Solution

The fourth proportional to 7,151.20, 10,726.80 and 5,911.90 is: 8,867.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.20 : 10,726.80 = 5,911.90 : x
  2. Step 2: Convert to fraction form
    7,151.20/10,726.80 = 5,911.90/x
  3. Step 3: Cross multiply
    7,151.20x = 10,726.80 × 5,911.90
  4. Step 4: Simplify right side
    7,151.20x = 63,415,768.92
  5. Step 5: Solve for x
    x = 63,415,768.92/7,151.20
  6. Step 6: Final answer
    x = 8,867.85

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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.