Home / 8,123.92-11,212.12-4,937.28

Finding the Fourth Proportional to 8,123.92, 11,212.12 and 4,937.28

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Solution

The fourth proportional to 8,123.92, 11,212.12 and 4,937.28 is: 6,814.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,123.92 : 11,212.12 = 4,937.28 : x
  2. Step 2: Convert to fraction form
    8,123.92/11,212.12 = 4,937.28/x
  3. Step 3: Cross multiply
    8,123.92x = 11,212.12 × 4,937.28
  4. Step 4: Simplify right side
    8,123.92x = 55,357,375.83
  5. Step 5: Solve for x
    x = 55,357,375.83/8,123.92
  6. Step 6: Final answer
    x = 6,814.12

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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.