Home / 7,142.04-10,713.06-2,211.72

Finding the Fourth Proportional to 7,142.04, 10,713.06 and 2,211.72

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Solution

The fourth proportional to 7,142.04, 10,713.06 and 2,211.72 is: 3,317.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,142.04 : 10,713.06 = 2,211.72 : x
  2. Step 2: Convert to fraction form
    7,142.04/10,713.06 = 2,211.72/x
  3. Step 3: Cross multiply
    7,142.04x = 10,713.06 × 2,211.72
  4. Step 4: Simplify right side
    7,142.04x = 23,694,309.15
  5. Step 5: Solve for x
    x = 23,694,309.15/7,142.04
  6. Step 6: Final answer
    x = 3,317.58

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.