Home / 2,252.49-3,108.51-1,257.78

Finding the Fourth Proportional to 2,252.49, 3,108.51 and 1,257.78

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Solution

The fourth proportional to 2,252.49, 3,108.51 and 1,257.78 is: 1,735.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,252.49 : 3,108.51 = 1,257.78 : x
  2. Step 2: Convert to fraction form
    2,252.49/3,108.51 = 1,257.78/x
  3. Step 3: Cross multiply
    2,252.49x = 3,108.51 × 1,257.78
  4. Step 4: Simplify right side
    2,252.49x = 3,909,821.71
  5. Step 5: Solve for x
    x = 3,909,821.71/2,252.49
  6. Step 6: Final answer
    x = 1,735.78

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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.