Home / 3,029.65-4,180.85-1,981.69

Finding the Fourth Proportional to 3,029.65, 4,180.85 and 1,981.69

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Solution

The fourth proportional to 3,029.65, 4,180.85 and 1,981.69 is: 2,734.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,029.65 : 4,180.85 = 1,981.69 : x
  2. Step 2: Convert to fraction form
    3,029.65/4,180.85 = 1,981.69/x
  3. Step 3: Cross multiply
    3,029.65x = 4,180.85 × 1,981.69
  4. Step 4: Simplify right side
    3,029.65x = 8,285,138.73
  5. Step 5: Solve for x
    x = 8,285,138.73/3,029.65
  6. Step 6: Final answer
    x = 2,734.69

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Half scale
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Double scale
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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.