Home / 4,122.75-5,689.80-2,354.40

Finding the Fourth Proportional to 4,122.75, 5,689.80 and 2,354.40

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Solution

The fourth proportional to 4,122.75, 5,689.80 and 2,354.40 is: 3,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,122.75 : 5,689.80 = 2,354.40 : x
  2. Step 2: Convert to fraction form
    4,122.75/5,689.80 = 2,354.40/x
  3. Step 3: Cross multiply
    4,122.75x = 5,689.80 × 2,354.40
  4. Step 4: Simplify right side
    4,122.75x = 13,396,065.12
  5. Step 5: Solve for x
    x = 13,396,065.12/4,122.75
  6. Step 6: Final answer
    x = 3,249.30

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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.