Home / 2,010.09-3,015.15-1,321.12

Finding the Fourth Proportional to 2,010.09, 3,015.15 and 1,321.12

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Solution

The fourth proportional to 2,010.09, 3,015.15 and 1,321.12 is: 1,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,010.09 : 3,015.15 = 1,321.12 : x
  2. Step 2: Convert to fraction form
    2,010.09/3,015.15 = 1,321.12/x
  3. Step 3: Cross multiply
    2,010.09x = 3,015.15 × 1,321.12
  4. Step 4: Simplify right side
    2,010.09x = 3,983,374.97
  5. Step 5: Solve for x
    x = 3,983,374.97/2,010.09
  6. Step 6: Final answer
    x = 1,981.69

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.