Home / 5,113.92-7,057.12-2,875.80

Finding the Fourth Proportional to 5,113.92, 7,057.12 and 2,875.80

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Solution

The fourth proportional to 5,113.92, 7,057.12 and 2,875.80 is: 3,968.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.92 : 7,057.12 = 2,875.80 : x
  2. Step 2: Convert to fraction form
    5,113.92/7,057.12 = 2,875.80/x
  3. Step 3: Cross multiply
    5,113.92x = 7,057.12 × 2,875.80
  4. Step 4: Simplify right side
    5,113.92x = 20,294,865.70
  5. Step 5: Solve for x
    x = 20,294,865.70/5,113.92
  6. Step 6: Final answer
    x = 3,968.55

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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.