Home / 3,116.75-4,302.30-2,122.46

Finding the Fourth Proportional to 3,116.75, 4,302.30 and 2,122.46

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Solution

The fourth proportional to 3,116.75, 4,302.30 and 2,122.46 is: 2,929.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,116.75 : 4,302.30 = 2,122.46 : x
  2. Step 2: Convert to fraction form
    3,116.75/4,302.30 = 2,122.46/x
  3. Step 3: Cross multiply
    3,116.75x = 4,302.30 × 2,122.46
  4. Step 4: Simplify right side
    3,116.75x = 9,131,459.66
  5. Step 5: Solve for x
    x = 9,131,459.66/3,116.75
  6. Step 6: Final answer
    x = 2,929.80

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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.