Home / 2,148.61-2,965.08-1,217.11

Finding the Fourth Proportional to 2,148.61, 2,965.08 and 1,217.11

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Solution

The fourth proportional to 2,148.61, 2,965.08 and 1,217.11 is: 1,679.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.61 : 2,965.08 = 1,217.11 : x
  2. Step 2: Convert to fraction form
    2,148.61/2,965.08 = 1,217.11/x
  3. Step 3: Cross multiply
    2,148.61x = 2,965.08 × 1,217.11
  4. Step 4: Simplify right side
    2,148.61x = 3,608,821.11
  5. Step 5: Solve for x
    x = 3,608,821.11/2,148.61
  6. Step 6: Final answer
    x = 1,679.61

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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.