Home / 5,081.40-7,012.08-2,843.28

Finding the Fourth Proportional to 5,081.40, 7,012.08 and 2,843.28

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Solution

The fourth proportional to 5,081.40, 7,012.08 and 2,843.28 is: 3,923.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,081.40 : 7,012.08 = 2,843.28 : x
  2. Step 2: Convert to fraction form
    5,081.40/7,012.08 = 2,843.28/x
  3. Step 3: Cross multiply
    5,081.40x = 7,012.08 × 2,843.28
  4. Step 4: Simplify right side
    5,081.40x = 19,937,306.82
  5. Step 5: Solve for x
    x = 19,937,306.82/5,081.40
  6. Step 6: Final answer
    x = 3,923.59

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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.