Home / 5,126.73-7,074.90-2,888.61

Finding the Fourth Proportional to 5,126.73, 7,074.90 and 2,888.61

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Solution

The fourth proportional to 5,126.73, 7,074.90 and 2,888.61 is: 3,986.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,126.73 : 7,074.90 = 2,888.61 : x
  2. Step 2: Convert to fraction form
    5,126.73/7,074.90 = 2,888.61/x
  3. Step 3: Cross multiply
    5,126.73x = 7,074.90 × 2,888.61
  4. Step 4: Simplify right side
    5,126.73x = 20,436,626.89
  5. Step 5: Solve for x
    x = 20,436,626.89/5,126.73
  6. Step 6: Final answer
    x = 3,986.29

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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.