Home / 5,211.41-7,191.74-2,853.55

Finding the Fourth Proportional to 5,211.41, 7,191.74 and 2,853.55

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Solution

The fourth proportional to 5,211.41, 7,191.74 and 2,853.55 is: 3,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.41 : 7,191.74 = 2,853.55 : x
  2. Step 2: Convert to fraction form
    5,211.41/7,191.74 = 2,853.55/x
  3. Step 3: Cross multiply
    5,211.41x = 7,191.74 × 2,853.55
  4. Step 4: Simplify right side
    5,211.41x = 20,521,989.68
  5. Step 5: Solve for x
    x = 20,521,989.68/5,211.41
  6. Step 6: Final answer
    x = 3,937.90

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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.