Home / 2,721.90-3,756.02-1,542.80

Finding the Fourth Proportional to 2,721.90, 3,756.02 and 1,542.80

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Solution

The fourth proportional to 2,721.90, 3,756.02 and 1,542.80 is: 2,128.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,721.90 : 3,756.02 = 1,542.80 : x
  2. Step 2: Convert to fraction form
    2,721.90/3,756.02 = 1,542.80/x
  3. Step 3: Cross multiply
    2,721.90x = 3,756.02 × 1,542.80
  4. Step 4: Simplify right side
    2,721.90x = 5,794,787.66
  5. Step 5: Solve for x
    x = 5,794,787.66/2,721.90
  6. Step 6: Final answer
    x = 2,128.95

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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.