Home / 2,148.85-2,965.41-1,217.35

Finding the Fourth Proportional to 2,148.85, 2,965.41 and 1,217.35

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Solution

The fourth proportional to 2,148.85, 2,965.41 and 1,217.35 is: 1,679.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.85 : 2,965.41 = 1,217.35 : x
  2. Step 2: Convert to fraction form
    2,148.85/2,965.41 = 1,217.35/x
  3. Step 3: Cross multiply
    2,148.85x = 2,965.41 × 1,217.35
  4. Step 4: Simplify right side
    2,148.85x = 3,609,920.95
  5. Step 5: Solve for x
    x = 3,609,920.95/2,148.85
  6. Step 6: Final answer
    x = 1,679.94

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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.