Home / 2,801.40-3,865.90-1,542.57

Finding the Fourth Proportional to 2,801.40, 3,865.90 and 1,542.57

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Solution

The fourth proportional to 2,801.40, 3,865.90 and 1,542.57 is: 2,128.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.40 : 3,865.90 = 1,542.57 : x
  2. Step 2: Convert to fraction form
    2,801.40/3,865.90 = 1,542.57/x
  3. Step 3: Cross multiply
    2,801.40x = 3,865.90 × 1,542.57
  4. Step 4: Simplify right side
    2,801.40x = 5,963,421.36
  5. Step 5: Solve for x
    x = 5,963,421.36/2,801.40
  6. Step 6: Final answer
    x = 2,128.73

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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.