Home / 1,627.19-2,245.42-997.72

Finding the Fourth Proportional to 1,627.19, 2,245.42 and 997.72

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Solution

The fourth proportional to 1,627.19, 2,245.42 and 997.72 is: 1,376.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.19 : 2,245.42 = 997.72 : x
  2. Step 2: Convert to fraction form
    1,627.19/2,245.42 = 997.72/x
  3. Step 3: Cross multiply
    1,627.19x = 2,245.42 × 997.72
  4. Step 4: Simplify right side
    1,627.19x = 2,240,296.08
  5. Step 5: Solve for x
    x = 2,240,296.08/1,627.19
  6. Step 6: Final answer
    x = 1,376.79

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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.