Home / 2,261.49-3,121.14-1,317.29

Finding the Fourth Proportional to 2,261.49, 3,121.14 and 1,317.29

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Solution

The fourth proportional to 2,261.49, 3,121.14 and 1,317.29 is: 1,818.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.49 : 3,121.14 = 1,317.29 : x
  2. Step 2: Convert to fraction form
    2,261.49/3,121.14 = 1,317.29/x
  3. Step 3: Cross multiply
    2,261.49x = 3,121.14 × 1,317.29
  4. Step 4: Simplify right side
    2,261.49x = 4,111,446.51
  5. Step 5: Solve for x
    x = 4,111,446.51/2,261.49
  6. Step 6: Final answer
    x = 1,818.03

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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.