Home / 1,915.24-2,643.78-1,356.52

Finding the Fourth Proportional to 1,915.24, 2,643.78 and 1,356.52

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Solution

The fourth proportional to 1,915.24, 2,643.78 and 1,356.52 is: 1,872.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.24 : 2,643.78 = 1,356.52 : x
  2. Step 2: Convert to fraction form
    1,915.24/2,643.78 = 1,356.52/x
  3. Step 3: Cross multiply
    1,915.24x = 2,643.78 × 1,356.52
  4. Step 4: Simplify right side
    1,915.24x = 3,586,340.45
  5. Step 5: Solve for x
    x = 3,586,340.45/1,915.24
  6. Step 6: Final answer
    x = 1,872.53

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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.