Home / 5,211.42-7,191.93-3,116.76

Finding the Fourth Proportional to 5,211.42, 7,191.93 and 3,116.76

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Solution

The fourth proportional to 5,211.42, 7,191.93 and 3,116.76 is: 4,301.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,211.42 : 7,191.93 = 3,116.76 : x
  2. Step 2: Convert to fraction form
    5,211.42/7,191.93 = 3,116.76/x
  3. Step 3: Cross multiply
    5,211.42x = 7,191.93 × 3,116.76
  4. Step 4: Simplify right side
    5,211.42x = 22,415,519.75
  5. Step 5: Solve for x
    x = 22,415,519.75/5,211.42
  6. Step 6: Final answer
    x = 4,301.23

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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.