Home / 2,806.20-3,874.68-2,417.40

Finding the Fourth Proportional to 2,806.20, 3,874.68 and 2,417.40

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Solution

The fourth proportional to 2,806.20, 3,874.68 and 2,417.40 is: 3,337.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,806.20 : 3,874.68 = 2,417.40 : x
  2. Step 2: Convert to fraction form
    2,806.20/3,874.68 = 2,417.40/x
  3. Step 3: Cross multiply
    2,806.20x = 3,874.68 × 2,417.40
  4. Step 4: Simplify right side
    2,806.20x = 9,366,651.43
  5. Step 5: Solve for x
    x = 9,366,651.43/2,806.20
  6. Step 6: Final answer
    x = 3,337.84

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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.