Home / 1,915.24-2,642.96-1,170.44

Finding the Fourth Proportional to 1,915.24, 2,642.96 and 1,170.44

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Solution

The fourth proportional to 1,915.24, 2,642.96 and 1,170.44 is: 1,615.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.24 : 2,642.96 = 1,170.44 : x
  2. Step 2: Convert to fraction form
    1,915.24/2,642.96 = 1,170.44/x
  3. Step 3: Cross multiply
    1,915.24x = 2,642.96 × 1,170.44
  4. Step 4: Simplify right side
    1,915.24x = 3,093,420.25
  5. Step 5: Solve for x
    x = 3,093,420.25/1,915.24
  6. Step 6: Final answer
    x = 1,615.16

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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.