Home / 5,349.40-7,382.19-2,991.49

Finding the Fourth Proportional to 5,349.40, 7,382.19 and 2,991.49

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Solution

The fourth proportional to 5,349.40, 7,382.19 and 2,991.49 is: 4,128.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,349.40 : 7,382.19 = 2,991.49 : x
  2. Step 2: Convert to fraction form
    5,349.40/7,382.19 = 2,991.49/x
  3. Step 3: Cross multiply
    5,349.40x = 7,382.19 × 2,991.49
  4. Step 4: Simplify right side
    5,349.40x = 22,083,747.56
  5. Step 5: Solve for x
    x = 22,083,747.56/5,349.40
  6. Step 6: Final answer
    x = 4,128.27

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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.