Home / 2,087.24-3,129.60-992.12

Finding the Fourth Proportional to 2,087.24, 3,129.60 and 992.12

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Solution

The fourth proportional to 2,087.24, 3,129.60 and 992.12 is: 1,487.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.24 : 3,129.60 = 992.12 : x
  2. Step 2: Convert to fraction form
    2,087.24/3,129.60 = 992.12/x
  3. Step 3: Cross multiply
    2,087.24x = 3,129.60 × 992.12
  4. Step 4: Simplify right side
    2,087.24x = 3,104,938.75
  5. Step 5: Solve for x
    x = 3,104,938.75/2,087.24
  6. Step 6: Final answer
    x = 1,487.58

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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.