Home / 1,237.09-1,853.53-1,081.30

Finding the Fourth Proportional to 1,237.09, 1,853.53 and 1,081.30

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Solution

The fourth proportional to 1,237.09, 1,853.53 and 1,081.30 is: 1,620.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,237.09 : 1,853.53 = 1,081.30 : x
  2. Step 2: Convert to fraction form
    1,237.09/1,853.53 = 1,081.30/x
  3. Step 3: Cross multiply
    1,237.09x = 1,853.53 × 1,081.30
  4. Step 4: Simplify right side
    1,237.09x = 2,004,221.99
  5. Step 5: Solve for x
    x = 2,004,221.99/1,237.09
  6. Step 6: Final answer
    x = 1,620.11

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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.