Home / 5,239.28-7,230.36-2,881.57

Finding the Fourth Proportional to 5,239.28, 7,230.36 and 2,881.57

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Solution

The fourth proportional to 5,239.28, 7,230.36 and 2,881.57 is: 3,976.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.28 : 7,230.36 = 2,881.57 : x
  2. Step 2: Convert to fraction form
    5,239.28/7,230.36 = 2,881.57/x
  3. Step 3: Cross multiply
    5,239.28x = 7,230.36 × 2,881.57
  4. Step 4: Simplify right side
    5,239.28x = 20,834,788.47
  5. Step 5: Solve for x
    x = 20,834,788.47/5,239.28
  6. Step 6: Final answer
    x = 3,976.65

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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.