Home / 5,391.36-8,086.70-1,881.12

Finding the Fourth Proportional to 5,391.36, 8,086.70 and 1,881.12

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Solution

The fourth proportional to 5,391.36, 8,086.70 and 1,881.12 is: 2,821.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,391.36 : 8,086.70 = 1,881.12 : x
  2. Step 2: Convert to fraction form
    5,391.36/8,086.70 = 1,881.12/x
  3. Step 3: Cross multiply
    5,391.36x = 8,086.70 × 1,881.12
  4. Step 4: Simplify right side
    5,391.36x = 15,212,053.10
  5. Step 5: Solve for x
    x = 15,212,053.10/5,391.36
  6. Step 6: Final answer
    x = 2,821.56

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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.