Home / 2,631.15-3,631.70-1,512.20

Finding the Fourth Proportional to 2,631.15, 3,631.70 and 1,512.20

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Solution

The fourth proportional to 2,631.15, 3,631.70 and 1,512.20 is: 2,087.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.15 : 3,631.70 = 1,512.20 : x
  2. Step 2: Convert to fraction form
    2,631.15/3,631.70 = 1,512.20/x
  3. Step 3: Cross multiply
    2,631.15x = 3,631.70 × 1,512.20
  4. Step 4: Simplify right side
    2,631.15x = 5,491,869.60
  5. Step 5: Solve for x
    x = 5,491,869.60/2,631.15
  6. Step 6: Final answer
    x = 2,087.25

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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.