Home / 3,118.36-4,303.35-1,721.11

Finding the Fourth Proportional to 3,118.36, 4,303.35 and 1,721.11

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Solution

The fourth proportional to 3,118.36, 4,303.35 and 1,721.11 is: 2,375.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.36 : 4,303.35 = 1,721.11 : x
  2. Step 2: Convert to fraction form
    3,118.36/4,303.35 = 1,721.11/x
  3. Step 3: Cross multiply
    3,118.36x = 4,303.35 × 1,721.11
  4. Step 4: Simplify right side
    3,118.36x = 7,406,517.20
  5. Step 5: Solve for x
    x = 7,406,517.20/3,118.36
  6. Step 6: Final answer
    x = 2,375.14

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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.