Home / 8,117.76-11,204.24-5,131.68

Finding the Fourth Proportional to 8,117.76, 11,204.24 and 5,131.68

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Solution

The fourth proportional to 8,117.76, 11,204.24 and 5,131.68 is: 7,082.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,117.76 : 11,204.24 = 5,131.68 : x
  2. Step 2: Convert to fraction form
    8,117.76/11,204.24 = 5,131.68/x
  3. Step 3: Cross multiply
    8,117.76x = 11,204.24 × 5,131.68
  4. Step 4: Simplify right side
    8,117.76x = 57,496,574.32
  5. Step 5: Solve for x
    x = 57,496,574.32/8,117.76
  6. Step 6: Final answer
    x = 7,082.81

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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.