Home / 3,440.76-4,748.12-1,868.80

Finding the Fourth Proportional to 3,440.76, 4,748.12 and 1,868.80

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Solution

The fourth proportional to 3,440.76, 4,748.12 and 1,868.80 is: 2,578.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440.76 : 4,748.12 = 1,868.80 : x
  2. Step 2: Convert to fraction form
    3,440.76/4,748.12 = 1,868.80/x
  3. Step 3: Cross multiply
    3,440.76x = 4,748.12 × 1,868.80
  4. Step 4: Simplify right side
    3,440.76x = 8,873,286.66
  5. Step 5: Solve for x
    x = 8,873,286.66/3,440.76
  6. Step 6: Final answer
    x = 2,578.87

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Half scale
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Double scale
Find fourth proportional to 3,441.76, 4,749.50 and 1,869.80
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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.