Home / 8,790.45-12,126.92-5,251.56

Finding the Fourth Proportional to 8,790.45, 12,126.92 and 5,251.56

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Solution

The fourth proportional to 8,790.45, 12,126.92 and 5,251.56 is: 7,244.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.45 : 12,126.92 = 5,251.56 : x
  2. Step 2: Convert to fraction form
    8,790.45/12,126.92 = 5,251.56/x
  3. Step 3: Cross multiply
    8,790.45x = 12,126.92 × 5,251.56
  4. Step 4: Simplify right side
    8,790.45x = 63,685,221.74
  5. Step 5: Solve for x
    x = 63,685,221.74/8,790.45
  6. Step 6: Final answer
    x = 7,244.82

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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.