Home / 5,211.59-7,191.72-2,853.68

Finding the Fourth Proportional to 5,211.59, 7,191.72 and 2,853.68

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Solution

The fourth proportional to 5,211.59, 7,191.72 and 2,853.68 is: 3,937.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.59 : 7,191.72 = 2,853.68 : x
  2. Step 2: Convert to fraction form
    5,211.59/7,191.72 = 2,853.68/x
  3. Step 3: Cross multiply
    5,211.59x = 7,191.72 × 2,853.68
  4. Step 4: Simplify right side
    5,211.59x = 20,522,831.57
  5. Step 5: Solve for x
    x = 20,522,831.57/5,211.59
  6. Step 6: Final answer
    x = 3,937.93

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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.