Home / 2,278.90-3,145.15-1,394.82

Finding the Fourth Proportional to 2,278.90, 3,145.15 and 1,394.82

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Solution

The fourth proportional to 2,278.90, 3,145.15 and 1,394.82 is: 1,925.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.90 : 3,145.15 = 1,394.82 : x
  2. Step 2: Convert to fraction form
    2,278.90/3,145.15 = 1,394.82/x
  3. Step 3: Cross multiply
    2,278.90x = 3,145.15 × 1,394.82
  4. Step 4: Simplify right side
    2,278.90x = 4,386,918.12
  5. Step 5: Solve for x
    x = 4,386,918.12/2,278.90
  6. Step 6: Final answer
    x = 1,925.02

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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.