Home / 3,178.03-4,387.22-2,117.56

Finding the Fourth Proportional to 3,178.03, 4,387.22 and 2,117.56

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Solution

The fourth proportional to 3,178.03, 4,387.22 and 2,117.56 is: 2,923.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.03 : 4,387.22 = 2,117.56 : x
  2. Step 2: Convert to fraction form
    3,178.03/4,387.22 = 2,117.56/x
  3. Step 3: Cross multiply
    3,178.03x = 4,387.22 × 2,117.56
  4. Step 4: Simplify right side
    3,178.03x = 9,290,191.00
  5. Step 5: Solve for x
    x = 9,290,191.00/3,178.03
  6. Step 6: Final answer
    x = 2,923.25

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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.