Home / 3,101.40-4,280.38-2,354.11

Finding the Fourth Proportional to 3,101.40, 4,280.38 and 2,354.11

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Solution

The fourth proportional to 3,101.40, 4,280.38 and 2,354.11 is: 3,249.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.40 : 4,280.38 = 2,354.11 : x
  2. Step 2: Convert to fraction form
    3,101.40/4,280.38 = 2,354.11/x
  3. Step 3: Cross multiply
    3,101.40x = 4,280.38 × 2,354.11
  4. Step 4: Simplify right side
    3,101.40x = 10,076,468.78
  5. Step 5: Solve for x
    x = 10,076,468.78/3,101.40
  6. Step 6: Final answer
    x = 3,249.01

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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.