Home / 5,108.40-7,049.16-2,870.10

Finding the Fourth Proportional to 5,108.40, 7,049.16 and 2,870.10

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Solution

The fourth proportional to 5,108.40, 7,049.16 and 2,870.10 is: 3,960.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,108.40 : 7,049.16 = 2,870.10 : x
  2. Step 2: Convert to fraction form
    5,108.40/7,049.16 = 2,870.10/x
  3. Step 3: Cross multiply
    5,108.40x = 7,049.16 × 2,870.10
  4. Step 4: Simplify right side
    5,108.40x = 20,231,794.12
  5. Step 5: Solve for x
    x = 20,231,794.12/5,108.40
  6. Step 6: Final answer
    x = 3,960.50

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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.