Home / 2,178.08-3,006.12-1,294.36

Finding the Fourth Proportional to 2,178.08, 3,006.12 and 1,294.36

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Solution

The fourth proportional to 2,178.08, 3,006.12 and 1,294.36 is: 1,786.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.08 : 3,006.12 = 1,294.36 : x
  2. Step 2: Convert to fraction form
    2,178.08/3,006.12 = 1,294.36/x
  3. Step 3: Cross multiply
    2,178.08x = 3,006.12 × 1,294.36
  4. Step 4: Simplify right side
    2,178.08x = 3,891,001.48
  5. Step 5: Solve for x
    x = 3,891,001.48/2,178.08
  6. Step 6: Final answer
    x = 1,786.44

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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.