Home / 1,916.97-2,645.34-1,077.81

Finding the Fourth Proportional to 1,916.97, 2,645.34 and 1,077.81

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Solution

The fourth proportional to 1,916.97, 2,645.34 and 1,077.81 is: 1,487.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.97 : 2,645.34 = 1,077.81 : x
  2. Step 2: Convert to fraction form
    1,916.97/2,645.34 = 1,077.81/x
  3. Step 3: Cross multiply
    1,916.97x = 2,645.34 × 1,077.81
  4. Step 4: Simplify right side
    1,916.97x = 2,851,173.91
  5. Step 5: Solve for x
    x = 2,851,173.91/1,916.97
  6. Step 6: Final answer
    x = 1,487.33

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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.