Home / 2,236.13-3,085.40-1,291.91

Finding the Fourth Proportional to 2,236.13, 3,085.40 and 1,291.91

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Solution

The fourth proportional to 2,236.13, 3,085.40 and 1,291.91 is: 1,782.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,236.13 : 3,085.40 = 1,291.91 : x
  2. Step 2: Convert to fraction form
    2,236.13/3,085.40 = 1,291.91/x
  3. Step 3: Cross multiply
    2,236.13x = 3,085.40 × 1,291.91
  4. Step 4: Simplify right side
    2,236.13x = 3,986,070.06
  5. Step 5: Solve for x
    x = 3,986,070.06/2,236.13
  6. Step 6: Final answer
    x = 1,782.57

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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.