Home / 2,116.63-3,177.33-1,077.81

Finding the Fourth Proportional to 2,116.63, 3,177.33 and 1,077.81

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Solution

The fourth proportional to 2,116.63, 3,177.33 and 1,077.81 is: 1,617.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,116.63 : 3,177.33 = 1,077.81 : x
  2. Step 2: Convert to fraction form
    2,116.63/3,177.33 = 1,077.81/x
  3. Step 3: Cross multiply
    2,116.63x = 3,177.33 × 1,077.81
  4. Step 4: Simplify right side
    2,116.63x = 3,424,542.09
  5. Step 5: Solve for x
    x = 3,424,542.09/2,116.63
  6. Step 6: Final answer
    x = 1,617.92

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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.