Home / 3,540.20-4,872.58-3,117.79

Finding the Fourth Proportional to 3,540.20, 4,872.58 and 3,117.79

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Solution

The fourth proportional to 3,540.20, 4,872.58 and 3,117.79 is: 4,291.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,540.20 : 4,872.58 = 3,117.79 : x
  2. Step 2: Convert to fraction form
    3,540.20/4,872.58 = 3,117.79/x
  3. Step 3: Cross multiply
    3,540.20x = 4,872.58 × 3,117.79
  4. Step 4: Simplify right side
    3,540.20x = 15,191,681.20
  5. Step 5: Solve for x
    x = 15,191,681.20/3,540.20
  6. Step 6: Final answer
    x = 4,291.19

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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.