Home / 7,958.61-11,937.92-2,115.07

Finding the Fourth Proportional to 7,958.61, 11,937.92 and 2,115.07

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Solution

The fourth proportional to 7,958.61, 11,937.92 and 2,115.07 is: 3,172.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,958.61 : 11,937.92 = 2,115.07 : x
  2. Step 2: Convert to fraction form
    7,958.61/11,937.92 = 2,115.07/x
  3. Step 3: Cross multiply
    7,958.61x = 11,937.92 × 2,115.07
  4. Step 4: Simplify right side
    7,958.61x = 25,249,536.45
  5. Step 5: Solve for x
    x = 25,249,536.45/7,958.61
  6. Step 6: Final answer
    x = 3,172.61

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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.