Home / 1,249.40-1,869.43-1,182.65

Finding the Fourth Proportional to 1,249.40, 1,869.43 and 1,182.65

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Solution

The fourth proportional to 1,249.40, 1,869.43 and 1,182.65 is: 1,769.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.40 : 1,869.43 = 1,182.65 : x
  2. Step 2: Convert to fraction form
    1,249.40/1,869.43 = 1,182.65/x
  3. Step 3: Cross multiply
    1,249.40x = 1,869.43 × 1,182.65
  4. Step 4: Simplify right side
    1,249.40x = 2,210,881.82
  5. Step 5: Solve for x
    x = 2,210,881.82/1,249.40
  6. Step 6: Final answer
    x = 1,769.56

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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.