Home / 5,108.13-7,049.90-2,870.12

Finding the Fourth Proportional to 5,108.13, 7,049.90 and 2,870.12

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Solution

The fourth proportional to 5,108.13, 7,049.90 and 2,870.12 is: 3,961.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.13 : 7,049.90 = 2,870.12 : x
  2. Step 2: Convert to fraction form
    5,108.13/7,049.90 = 2,870.12/x
  3. Step 3: Cross multiply
    5,108.13x = 7,049.90 × 2,870.12
  4. Step 4: Simplify right side
    5,108.13x = 20,234,083.79
  5. Step 5: Solve for x
    x = 20,234,083.79/5,108.13
  6. Step 6: Final answer
    x = 3,961.15

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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.