Home / 3,874.45-5,813.31-2,117.40

Finding the Fourth Proportional to 3,874.45, 5,813.31 and 2,117.40

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Solution

The fourth proportional to 3,874.45, 5,813.31 and 2,117.40 is: 3,176.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,874.45 : 5,813.31 = 2,117.40 : x
  2. Step 2: Convert to fraction form
    3,874.45/5,813.31 = 2,117.40/x
  3. Step 3: Cross multiply
    3,874.45x = 5,813.31 × 2,117.40
  4. Step 4: Simplify right side
    3,874.45x = 12,309,073.53
  5. Step 5: Solve for x
    x = 12,309,073.53/3,874.45
  6. Step 6: Final answer
    x = 3,176.99

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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.