Home / 1,015.26-1,393.82-916.44

Finding the Fourth Proportional to 1,015.26, 1,393.82 and 916.44

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Solution

The fourth proportional to 1,015.26, 1,393.82 and 916.44 is: 1,258.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,015.26 : 1,393.82 = 916.44 : x
  2. Step 2: Convert to fraction form
    1,015.26/1,393.82 = 916.44/x
  3. Step 3: Cross multiply
    1,015.26x = 1,393.82 × 916.44
  4. Step 4: Simplify right side
    1,015.26x = 1,277,347.82
  5. Step 5: Solve for x
    x = 1,277,347.82/1,015.26
  6. Step 6: Final answer
    x = 1,258.15

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.