Home / 2,278.63-3,418.29-718.47

Finding the Fourth Proportional to 2,278.63, 3,418.29 and 718.47

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Solution

The fourth proportional to 2,278.63, 3,418.29 and 718.47 is: 1,077.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.63 : 3,418.29 = 718.47 : x
  2. Step 2: Convert to fraction form
    2,278.63/3,418.29 = 718.47/x
  3. Step 3: Cross multiply
    2,278.63x = 3,418.29 × 718.47
  4. Step 4: Simplify right side
    2,278.63x = 2,455,936.12
  5. Step 5: Solve for x
    x = 2,455,936.12/2,278.63
  6. Step 6: Final answer
    x = 1,077.81

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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.