Home / 5,211.12-7,191.37-2,853.48

Finding the Fourth Proportional to 5,211.12, 7,191.37 and 2,853.48

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Solution

The fourth proportional to 5,211.12, 7,191.37 and 2,853.48 is: 3,937.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.12 : 7,191.37 = 2,853.48 : x
  2. Step 2: Convert to fraction form
    5,211.12/7,191.37 = 2,853.48/x
  3. Step 3: Cross multiply
    5,211.12x = 7,191.37 × 2,853.48
  4. Step 4: Simplify right side
    5,211.12x = 20,520,430.47
  5. Step 5: Solve for x
    x = 20,520,430.47/5,211.12
  6. Step 6: Final answer
    x = 3,937.82

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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.