Home / 3,176.40-4,377.42-2,290.62

Finding the Fourth Proportional to 3,176.40, 4,377.42 and 2,290.62

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Solution

The fourth proportional to 3,176.40, 4,377.42 and 2,290.62 is: 3,156.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,176.40 : 4,377.42 = 2,290.62 : x
  2. Step 2: Convert to fraction form
    3,176.40/4,377.42 = 2,290.62/x
  3. Step 3: Cross multiply
    3,176.40x = 4,377.42 × 2,290.62
  4. Step 4: Simplify right side
    3,176.40x = 10,027,005.80
  5. Step 5: Solve for x
    x = 10,027,005.80/3,176.40
  6. Step 6: Final answer
    x = 3,156.72

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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.