Home / 8,725.20-12,040.80-5,190.24

Finding the Fourth Proportional to 8,725.20, 12,040.80 and 5,190.24

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Solution

The fourth proportional to 8,725.20, 12,040.80 and 5,190.24 is: 7,162.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,725.20 : 12,040.80 = 5,190.24 : x
  2. Step 2: Convert to fraction form
    8,725.20/12,040.80 = 5,190.24/x
  3. Step 3: Cross multiply
    8,725.20x = 12,040.80 × 5,190.24
  4. Step 4: Simplify right side
    8,725.20x = 62,494,641.79
  5. Step 5: Solve for x
    x = 62,494,641.79/8,725.20
  6. Step 6: Final answer
    x = 7,162.55

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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.