Home / 5,148.73-7,105.28-2,790.87

Finding the Fourth Proportional to 5,148.73, 7,105.28 and 2,790.87

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Solution

The fourth proportional to 5,148.73, 7,105.28 and 2,790.87 is: 3,851.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,148.73 : 7,105.28 = 2,790.87 : x
  2. Step 2: Convert to fraction form
    5,148.73/7,105.28 = 2,790.87/x
  3. Step 3: Cross multiply
    5,148.73x = 7,105.28 × 2,790.87
  4. Step 4: Simplify right side
    5,148.73x = 19,829,912.79
  5. Step 5: Solve for x
    x = 19,829,912.79/5,148.73
  6. Step 6: Final answer
    x = 3,851.42

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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.