Home / 2,148.66-2,965.15-1,217.16

Finding the Fourth Proportional to 2,148.66, 2,965.15 and 1,217.16

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Solution

The fourth proportional to 2,148.66, 2,965.15 and 1,217.16 is: 1,679.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,148.66 : 2,965.15 = 1,217.16 : x
  2. Step 2: Convert to fraction form
    2,148.66/2,965.15 = 1,217.16/x
  3. Step 3: Cross multiply
    2,148.66x = 2,965.15 × 1,217.16
  4. Step 4: Simplify right side
    2,148.66x = 3,609,047.81
  5. Step 5: Solve for x
    x = 3,609,047.81/2,148.66
  6. Step 6: Final answer
    x = 1,679.68

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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.