Home / 5,251.80-7,255.40-3,923.16

Finding the Fourth Proportional to 5,251.80, 7,255.40 and 3,923.16

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Solution

The fourth proportional to 5,251.80, 7,255.40 and 3,923.16 is: 5,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,251.80 : 7,255.40 = 3,923.16 : x
  2. Step 2: Convert to fraction form
    5,251.80/7,255.40 = 3,923.16/x
  3. Step 3: Cross multiply
    5,251.80x = 7,255.40 × 3,923.16
  4. Step 4: Simplify right side
    5,251.80x = 28,464,095.06
  5. Step 5: Solve for x
    x = 28,464,095.06/5,251.80
  6. Step 6: Final answer
    x = 5,419.87

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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.