Home / 3,123.30-4,309.44-1,796.76

Finding the Fourth Proportional to 3,123.30, 4,309.44 and 1,796.76

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Solution

The fourth proportional to 3,123.30, 4,309.44 and 1,796.76 is: 2,479.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.30 : 4,309.44 = 1,796.76 : x
  2. Step 2: Convert to fraction form
    3,123.30/4,309.44 = 1,796.76/x
  3. Step 3: Cross multiply
    3,123.30x = 4,309.44 × 1,796.76
  4. Step 4: Simplify right side
    3,123.30x = 7,743,029.41
  5. Step 5: Solve for x
    x = 7,743,029.41/3,123.30
  6. Step 6: Final answer
    x = 2,479.12

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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.