Home / 2,257.79-3,387.98-1,217.79

Finding the Fourth Proportional to 2,257.79, 3,387.98 and 1,217.79

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Solution

The fourth proportional to 2,257.79, 3,387.98 and 1,217.79 is: 1,827.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,257.79 : 3,387.98 = 1,217.79 : x
  2. Step 2: Convert to fraction form
    2,257.79/3,387.98 = 1,217.79/x
  3. Step 3: Cross multiply
    2,257.79x = 3,387.98 × 1,217.79
  4. Step 4: Simplify right side
    2,257.79x = 4,125,848.16
  5. Step 5: Solve for x
    x = 4,125,848.16/2,257.79
  6. Step 6: Final answer
    x = 1,827.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.