Home / 1,915.27-2,642.39-1,252.51

Finding the Fourth Proportional to 1,915.27, 2,642.39 and 1,252.51

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Solution

The fourth proportional to 1,915.27, 2,642.39 and 1,252.51 is: 1,728.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.27 : 2,642.39 = 1,252.51 : x
  2. Step 2: Convert to fraction form
    1,915.27/2,642.39 = 1,252.51/x
  3. Step 3: Cross multiply
    1,915.27x = 2,642.39 × 1,252.51
  4. Step 4: Simplify right side
    1,915.27x = 3,309,611.73
  5. Step 5: Solve for x
    x = 3,309,611.73/1,915.27
  6. Step 6: Final answer
    x = 1,728.02

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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.