Home / 8,747.20-13,120.72-2,507.21

Finding the Fourth Proportional to 8,747.20, 13,120.72 and 2,507.21

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Solution

The fourth proportional to 8,747.20, 13,120.72 and 2,507.21 is: 3,760.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,747.20 : 13,120.72 = 2,507.21 : x
  2. Step 2: Convert to fraction form
    8,747.20/13,120.72 = 2,507.21/x
  3. Step 3: Cross multiply
    8,747.20x = 13,120.72 × 2,507.21
  4. Step 4: Simplify right side
    8,747.20x = 32,896,400.39
  5. Step 5: Solve for x
    x = 32,896,400.39/8,747.20
  6. Step 6: Final answer
    x = 3,760.79

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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.