Home / 5,107.91-7,049.08-2,870.18

Finding the Fourth Proportional to 5,107.91, 7,049.08 and 2,870.18

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Solution

The fourth proportional to 5,107.91, 7,049.08 and 2,870.18 is: 3,960.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.91 : 7,049.08 = 2,870.18 : x
  2. Step 2: Convert to fraction form
    5,107.91/7,049.08 = 2,870.18/x
  3. Step 3: Cross multiply
    5,107.91x = 7,049.08 × 2,870.18
  4. Step 4: Simplify right side
    5,107.91x = 20,232,114.08
  5. Step 5: Solve for x
    x = 20,232,114.08/5,107.91
  6. Step 6: Final answer
    x = 3,960.94

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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.