Home / 1,915.52-2,640.60-1,354.16

Finding the Fourth Proportional to 1,915.52, 2,640.60 and 1,354.16

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Solution

The fourth proportional to 1,915.52, 2,640.60 and 1,354.16 is: 1,866.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,915.52 : 2,640.60 = 1,354.16 : x
  2. Step 2: Convert to fraction form
    1,915.52/2,640.60 = 1,354.16/x
  3. Step 3: Cross multiply
    1,915.52x = 2,640.60 × 1,354.16
  4. Step 4: Simplify right side
    1,915.52x = 3,575,794.90
  5. Step 5: Solve for x
    x = 3,575,794.90/1,915.52
  6. Step 6: Final answer
    x = 1,866.75

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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.