Home / 3,065.19-4,228.68-1,869.21

Finding the Fourth Proportional to 3,065.19, 4,228.68 and 1,869.21

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Solution

The fourth proportional to 3,065.19, 4,228.68 and 1,869.21 is: 2,578.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,065.19 : 4,228.68 = 1,869.21 : x
  2. Step 2: Convert to fraction form
    3,065.19/4,228.68 = 1,869.21/x
  3. Step 3: Cross multiply
    3,065.19x = 4,228.68 × 1,869.21
  4. Step 4: Simplify right side
    3,065.19x = 7,904,290.94
  5. Step 5: Solve for x
    x = 7,904,290.94/3,065.19
  6. Step 6: Final answer
    x = 2,578.73

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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.