Home / 5,239.42-7,230.40-2,881.56

Finding the Fourth Proportional to 5,239.42, 7,230.40 and 2,881.56

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Solution

The fourth proportional to 5,239.42, 7,230.40 and 2,881.56 is: 3,976.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,239.42 : 7,230.40 = 2,881.56 : x
  2. Step 2: Convert to fraction form
    5,239.42/7,230.40 = 2,881.56/x
  3. Step 3: Cross multiply
    5,239.42x = 7,230.40 × 2,881.56
  4. Step 4: Simplify right side
    5,239.42x = 20,834,810.66
  5. Step 5: Solve for x
    x = 20,834,810.66/5,239.42
  6. Step 6: Final answer
    x = 3,976.55

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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.