Home / 1,627.50-2,245.40-997.80

Finding the Fourth Proportional to 1,627.50, 2,245.40 and 997.80

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Solution

The fourth proportional to 1,627.50, 2,245.40 and 997.80 is: 1,376.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.50 : 2,245.40 = 997.80 : x
  2. Step 2: Convert to fraction form
    1,627.50/2,245.40 = 997.80/x
  3. Step 3: Cross multiply
    1,627.50x = 2,245.40 × 997.80
  4. Step 4: Simplify right side
    1,627.50x = 2,240,460.12
  5. Step 5: Solve for x
    x = 2,240,460.12/1,627.50
  6. Step 6: Final answer
    x = 1,376.63

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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.