Home / 3,977.15-5,488.65-2,208.65

Finding the Fourth Proportional to 3,977.15, 5,488.65 and 2,208.65

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Solution

The fourth proportional to 3,977.15, 5,488.65 and 2,208.65 is: 3,048.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,977.15 : 5,488.65 = 2,208.65 : x
  2. Step 2: Convert to fraction form
    3,977.15/5,488.65 = 2,208.65/x
  3. Step 3: Cross multiply
    3,977.15x = 5,488.65 × 2,208.65
  4. Step 4: Simplify right side
    3,977.15x = 12,122,479.38
  5. Step 5: Solve for x
    x = 12,122,479.38/3,977.15
  6. Step 6: Final answer
    x = 3,048.04

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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.