Home / 3,178.40-4,381.97-2,609.15

Finding the Fourth Proportional to 3,178.40, 4,381.97 and 2,609.15

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Solution

The fourth proportional to 3,178.40, 4,381.97 and 2,609.15 is: 3,597.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.40 : 4,381.97 = 2,609.15 : x
  2. Step 2: Convert to fraction form
    3,178.40/4,381.97 = 2,609.15/x
  3. Step 3: Cross multiply
    3,178.40x = 4,381.97 × 2,609.15
  4. Step 4: Simplify right side
    3,178.40x = 11,433,182.07
  5. Step 5: Solve for x
    x = 11,433,182.07/3,178.40
  6. Step 6: Final answer
    x = 3,597.16

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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.