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Finding the Fourth Proportional to 2,779, 3,835.04 and 1,537

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Solution

The fourth proportional to 2,779, 3,835.04 and 1,537 is: 2,121.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,779 : 3,835.04 = 1,537 : x
  2. Step 2: Convert to fraction form
    2,779/3,835.04 = 1,537/x
  3. Step 3: Cross multiply
    2,779x = 3,835.04 × 1,537
  4. Step 4: Simplify right side
    2,779x = 5,894,456.48
  5. Step 5: Solve for x
    x = 5,894,456.48/2,779
  6. Step 6: Final answer
    x = 2,121.07

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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.