Home / 1,249.07-1,862.59-1,187.76

Finding the Fourth Proportional to 1,249.07, 1,862.59 and 1,187.76

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Solution

The fourth proportional to 1,249.07, 1,862.59 and 1,187.76 is: 1,771.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,249.07 : 1,862.59 = 1,187.76 : x
  2. Step 2: Convert to fraction form
    1,249.07/1,862.59 = 1,187.76/x
  3. Step 3: Cross multiply
    1,249.07x = 1,862.59 × 1,187.76
  4. Step 4: Simplify right side
    1,249.07x = 2,212,309.90
  5. Step 5: Solve for x
    x = 2,212,309.90/1,249.07
  6. Step 6: Final answer
    x = 1,771.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.