Home / 5,107.92-7,049.46-2,870.01

Finding the Fourth Proportional to 5,107.92, 7,049.46 and 2,870.01

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Solution

The fourth proportional to 5,107.92, 7,049.46 and 2,870.01 is: 3,960.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.92 : 7,049.46 = 2,870.01 : x
  2. Step 2: Convert to fraction form
    5,107.92/7,049.46 = 2,870.01/x
  3. Step 3: Cross multiply
    5,107.92x = 7,049.46 × 2,870.01
  4. Step 4: Simplify right side
    5,107.92x = 20,232,020.69
  5. Step 5: Solve for x
    x = 20,232,020.69/5,107.92
  6. Step 6: Final answer
    x = 3,960.91

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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.