Home / 3,118.68-4,678.20-1,170.72

Finding the Fourth Proportional to 3,118.68, 4,678.20 and 1,170.72

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Solution

The fourth proportional to 3,118.68, 4,678.20 and 1,170.72 is: 1,756.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.68 : 4,678.20 = 1,170.72 : x
  2. Step 2: Convert to fraction form
    3,118.68/4,678.20 = 1,170.72/x
  3. Step 3: Cross multiply
    3,118.68x = 4,678.20 × 1,170.72
  4. Step 4: Simplify right side
    3,118.68x = 5,476,862.30
  5. Step 5: Solve for x
    x = 5,476,862.30/3,118.68
  6. Step 6: Final answer
    x = 1,756.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.