Home / 2,819.10-3,890.13-1,758.07

Finding the Fourth Proportional to 2,819.10, 3,890.13 and 1,758.07

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Solution

The fourth proportional to 2,819.10, 3,890.13 and 1,758.07 is: 2,425.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,819.10 : 3,890.13 = 1,758.07 : x
  2. Step 2: Convert to fraction form
    2,819.10/3,890.13 = 1,758.07/x
  3. Step 3: Cross multiply
    2,819.10x = 3,890.13 × 1,758.07
  4. Step 4: Simplify right side
    2,819.10x = 6,839,119.12
  5. Step 5: Solve for x
    x = 6,839,119.12/2,819.10
  6. Step 6: Final answer
    x = 2,425.99

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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.