Home / 3,491.29-4,818.40-1,999.69

Finding the Fourth Proportional to 3,491.29, 4,818.40 and 1,999.69

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Solution

The fourth proportional to 3,491.29, 4,818.40 and 1,999.69 is: 2,759.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,491.29 : 4,818.40 = 1,999.69 : x
  2. Step 2: Convert to fraction form
    3,491.29/4,818.40 = 1,999.69/x
  3. Step 3: Cross multiply
    3,491.29x = 4,818.40 × 1,999.69
  4. Step 4: Simplify right side
    3,491.29x = 9,635,306.30
  5. Step 5: Solve for x
    x = 9,635,306.30/3,491.29
  6. Step 6: Final answer
    x = 2,759.81

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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.