Home / 3,720.86-5,135.02-2,712.80

Finding the Fourth Proportional to 3,720.86, 5,135.02 and 2,712.80

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Solution

The fourth proportional to 3,720.86, 5,135.02 and 2,712.80 is: 3,743.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.86 : 5,135.02 = 2,712.80 : x
  2. Step 2: Convert to fraction form
    3,720.86/5,135.02 = 2,712.80/x
  3. Step 3: Cross multiply
    3,720.86x = 5,135.02 × 2,712.80
  4. Step 4: Simplify right side
    3,720.86x = 13,930,282.26
  5. Step 5: Solve for x
    x = 13,930,282.26/3,720.86
  6. Step 6: Final answer
    x = 3,743.83

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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.