Home / 3,377.90-4,659.63-1,980.38

Finding the Fourth Proportional to 3,377.90, 4,659.63 and 1,980.38

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Solution

The fourth proportional to 3,377.90, 4,659.63 and 1,980.38 is: 2,731.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,377.90 : 4,659.63 = 1,980.38 : x
  2. Step 2: Convert to fraction form
    3,377.90/4,659.63 = 1,980.38/x
  3. Step 3: Cross multiply
    3,377.90x = 4,659.63 × 1,980.38
  4. Step 4: Simplify right side
    3,377.90x = 9,227,838.06
  5. Step 5: Solve for x
    x = 9,227,838.06/3,377.90
  6. Step 6: Final answer
    x = 2,731.83

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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.