Home / 3,975.68-5,486.20-2,207.18

Finding the Fourth Proportional to 3,975.68, 5,486.20 and 2,207.18

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Solution

The fourth proportional to 3,975.68, 5,486.20 and 2,207.18 is: 3,045.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,975.68 : 5,486.20 = 2,207.18 : x
  2. Step 2: Convert to fraction form
    3,975.68/5,486.20 = 2,207.18/x
  3. Step 3: Cross multiply
    3,975.68x = 5,486.20 × 2,207.18
  4. Step 4: Simplify right side
    3,975.68x = 12,109,030.92
  5. Step 5: Solve for x
    x = 12,109,030.92/3,975.68
  6. Step 6: Final answer
    x = 3,045.78

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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.