Home / 6,143.80-9,191.40-5,331.10

Finding the Fourth Proportional to 6,143.80, 9,191.40 and 5,331.10

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Solution

The fourth proportional to 6,143.80, 9,191.40 and 5,331.10 is: 7,975.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,143.80 : 9,191.40 = 5,331.10 : x
  2. Step 2: Convert to fraction form
    6,143.80/9,191.40 = 5,331.10/x
  3. Step 3: Cross multiply
    6,143.80x = 9,191.40 × 5,331.10
  4. Step 4: Simplify right side
    6,143.80x = 49,000,272.54
  5. Step 5: Solve for x
    x = 49,000,272.54/6,143.80
  6. Step 6: Final answer
    x = 7,975.56

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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.