Home / 2,035.30-2,808.68-1,138.99

Finding the Fourth Proportional to 2,035.30, 2,808.68 and 1,138.99

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Solution

The fourth proportional to 2,035.30, 2,808.68 and 1,138.99 is: 1,571.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,035.30 : 2,808.68 = 1,138.99 : x
  2. Step 2: Convert to fraction form
    2,035.30/2,808.68 = 1,138.99/x
  3. Step 3: Cross multiply
    2,035.30x = 2,808.68 × 1,138.99
  4. Step 4: Simplify right side
    2,035.30x = 3,199,043.08
  5. Step 5: Solve for x
    x = 3,199,043.08/2,035.30
  6. Step 6: Final answer
    x = 1,571.78

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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.