Home / 3,079.70-4,248.78-1,898.72

Finding the Fourth Proportional to 3,079.70, 4,248.78 and 1,898.72

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Solution

The fourth proportional to 3,079.70, 4,248.78 and 1,898.72 is: 2,619.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,079.70 : 4,248.78 = 1,898.72 : x
  2. Step 2: Convert to fraction form
    3,079.70/4,248.78 = 1,898.72/x
  3. Step 3: Cross multiply
    3,079.70x = 4,248.78 × 1,898.72
  4. Step 4: Simplify right side
    3,079.70x = 8,067,243.56
  5. Step 5: Solve for x
    x = 8,067,243.56/3,079.70
  6. Step 6: Final answer
    x = 2,619.49

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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.