Home / 8,790.28-12,129.06-5,063.56

Finding the Fourth Proportional to 8,790.28, 12,129.06 and 5,063.56

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Solution

The fourth proportional to 8,790.28, 12,129.06 and 5,063.56 is: 6,986.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,790.28 : 12,129.06 = 5,063.56 : x
  2. Step 2: Convert to fraction form
    8,790.28/12,129.06 = 5,063.56/x
  3. Step 3: Cross multiply
    8,790.28x = 12,129.06 × 5,063.56
  4. Step 4: Simplify right side
    8,790.28x = 61,416,223.05
  5. Step 5: Solve for x
    x = 61,416,223.05/8,790.28
  6. Step 6: Final answer
    x = 6,986.83

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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.