Home / 5,211.18-7,191.61-2,853.32

Finding the Fourth Proportional to 5,211.18, 7,191.61 and 2,853.32

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Solution

The fourth proportional to 5,211.18, 7,191.61 and 2,853.32 is: 3,937.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.18 : 7,191.61 = 2,853.32 : x
  2. Step 2: Convert to fraction form
    5,211.18/7,191.61 = 2,853.32/x
  3. Step 3: Cross multiply
    5,211.18x = 7,191.61 × 2,853.32
  4. Step 4: Simplify right side
    5,211.18x = 20,519,921.55
  5. Step 5: Solve for x
    x = 20,519,921.55/5,211.18
  6. Step 6: Final answer
    x = 3,937.67

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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.