Home / 5,211.13-7,191.38-2,853.31

Finding the Fourth Proportional to 5,211.13, 7,191.38 and 2,853.31

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Solution

The fourth proportional to 5,211.13, 7,191.38 and 2,853.31 is: 3,937.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.13 : 7,191.38 = 2,853.31 : x
  2. Step 2: Convert to fraction form
    5,211.13/7,191.38 = 2,853.31/x
  3. Step 3: Cross multiply
    5,211.13x = 7,191.38 × 2,853.31
  4. Step 4: Simplify right side
    5,211.13x = 20,519,186.24
  5. Step 5: Solve for x
    x = 20,519,186.24/5,211.13
  6. Step 6: Final answer
    x = 3,937.57

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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.