Home / 1,806.11-2,494.49-1,215.62

Finding the Fourth Proportional to 1,806.11, 2,494.49 and 1,215.62

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Solution

The fourth proportional to 1,806.11, 2,494.49 and 1,215.62 is: 1,678.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,806.11 : 2,494.49 = 1,215.62 : x
  2. Step 2: Convert to fraction form
    1,806.11/2,494.49 = 1,215.62/x
  3. Step 3: Cross multiply
    1,806.11x = 2,494.49 × 1,215.62
  4. Step 4: Simplify right side
    1,806.11x = 3,032,351.93
  5. Step 5: Solve for x
    x = 3,032,351.93/1,806.11
  6. Step 6: Final answer
    x = 1,678.94

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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.