Home / 3,085.13-4,257.48-1,687.88

Finding the Fourth Proportional to 3,085.13, 4,257.48 and 1,687.88

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Solution

The fourth proportional to 3,085.13, 4,257.48 and 1,687.88 is: 2,329.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.13 : 4,257.48 = 1,687.88 : x
  2. Step 2: Convert to fraction form
    3,085.13/4,257.48 = 1,687.88/x
  3. Step 3: Cross multiply
    3,085.13x = 4,257.48 × 1,687.88
  4. Step 4: Simplify right side
    3,085.13x = 7,186,094.06
  5. Step 5: Solve for x
    x = 7,186,094.06/3,085.13
  6. Step 6: Final answer
    x = 2,329.27

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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.