Home / 1,966.61-2,713.55-1,257.91

Finding the Fourth Proportional to 1,966.61, 2,713.55 and 1,257.91

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Solution

The fourth proportional to 1,966.61, 2,713.55 and 1,257.91 is: 1,735.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,966.61 : 2,713.55 = 1,257.91 : x
  2. Step 2: Convert to fraction form
    1,966.61/2,713.55 = 1,257.91/x
  3. Step 3: Cross multiply
    1,966.61x = 2,713.55 × 1,257.91
  4. Step 4: Simplify right side
    1,966.61x = 3,413,410.95
  5. Step 5: Solve for x
    x = 3,413,410.95/1,966.61
  6. Step 6: Final answer
    x = 1,735.68

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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.