Home / 5,211.42-7,191.90-3,116.76

Finding the Fourth Proportional to 5,211.42, 7,191.90 and 3,116.76

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Solution

The fourth proportional to 5,211.42, 7,191.90 and 3,116.76 is: 4,301.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.42 : 7,191.90 = 3,116.76 : x
  2. Step 2: Convert to fraction form
    5,211.42/7,191.90 = 3,116.76/x
  3. Step 3: Cross multiply
    5,211.42x = 7,191.90 × 3,116.76
  4. Step 4: Simplify right side
    5,211.42x = 22,415,426.24
  5. Step 5: Solve for x
    x = 22,415,426.24/5,211.42
  6. Step 6: Final answer
    x = 4,301.21

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Half scale
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Double scale
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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.