Home / 1,849.13-2,550.47-1,378.65

Finding the Fourth Proportional to 1,849.13, 2,550.47 and 1,378.65

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Solution

The fourth proportional to 1,849.13, 2,550.47 and 1,378.65 is: 1,901.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,849.13 : 2,550.47 = 1,378.65 : x
  2. Step 2: Convert to fraction form
    1,849.13/2,550.47 = 1,378.65/x
  3. Step 3: Cross multiply
    1,849.13x = 2,550.47 × 1,378.65
  4. Step 4: Simplify right side
    1,849.13x = 3,516,198.57
  5. Step 5: Solve for x
    x = 3,516,198.57/1,849.13
  6. Step 6: Final answer
    x = 1,901.55

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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.