Home / 8,975.56-12,387.72-5,198.80

Finding the Fourth Proportional to 8,975.56, 12,387.72 and 5,198.80

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Solution

The fourth proportional to 8,975.56, 12,387.72 and 5,198.80 is: 7,175.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,975.56 : 12,387.72 = 5,198.80 : x
  2. Step 2: Convert to fraction form
    8,975.56/12,387.72 = 5,198.80/x
  3. Step 3: Cross multiply
    8,975.56x = 12,387.72 × 5,198.80
  4. Step 4: Simplify right side
    8,975.56x = 64,401,278.74
  5. Step 5: Solve for x
    x = 64,401,278.74/8,975.56
  6. Step 6: Final answer
    x = 7,175.18

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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.