Home / 3,006.91-4,149.72-1,680.72

Finding the Fourth Proportional to 3,006.91, 4,149.72 and 1,680.72

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Solution

The fourth proportional to 3,006.91, 4,149.72 and 1,680.72 is: 2,319.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,006.91 : 4,149.72 = 1,680.72 : x
  2. Step 2: Convert to fraction form
    3,006.91/4,149.72 = 1,680.72/x
  3. Step 3: Cross multiply
    3,006.91x = 4,149.72 × 1,680.72
  4. Step 4: Simplify right side
    3,006.91x = 6,974,517.40
  5. Step 5: Solve for x
    x = 6,974,517.40/3,006.91
  6. Step 6: Final answer
    x = 2,319.50

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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.