Home / 1,239.39-1,849.51-1,101.33

Finding the Fourth Proportional to 1,239.39, 1,849.51 and 1,101.33

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Solution

The fourth proportional to 1,239.39, 1,849.51 and 1,101.33 is: 1,643.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239.39 : 1,849.51 = 1,101.33 : x
  2. Step 2: Convert to fraction form
    1,239.39/1,849.51 = 1,101.33/x
  3. Step 3: Cross multiply
    1,239.39x = 1,849.51 × 1,101.33
  4. Step 4: Simplify right side
    1,239.39x = 2,036,920.85
  5. Step 5: Solve for x
    x = 2,036,920.85/1,239.39
  6. Step 6: Final answer
    x = 1,643.49

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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.