Home / 2,801.28-3,865.77-1,542.36

Finding the Fourth Proportional to 2,801.28, 3,865.77 and 1,542.36

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Solution

The fourth proportional to 2,801.28, 3,865.77 and 1,542.36 is: 2,128.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,801.28 : 3,865.77 = 1,542.36 : x
  2. Step 2: Convert to fraction form
    2,801.28/3,865.77 = 1,542.36/x
  3. Step 3: Cross multiply
    2,801.28x = 3,865.77 × 1,542.36
  4. Step 4: Simplify right side
    2,801.28x = 5,962,409.02
  5. Step 5: Solve for x
    x = 5,962,409.02/2,801.28
  6. Step 6: Final answer
    x = 2,128.46

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1.5x scale

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.