Home / 2,178.96-3,007.64-1,248.08

Finding the Fourth Proportional to 2,178.96, 3,007.64 and 1,248.08

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Solution

The fourth proportional to 2,178.96, 3,007.64 and 1,248.08 is: 1,722.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,178.96 : 3,007.64 = 1,248.08 : x
  2. Step 2: Convert to fraction form
    2,178.96/3,007.64 = 1,248.08/x
  3. Step 3: Cross multiply
    2,178.96x = 3,007.64 × 1,248.08
  4. Step 4: Simplify right side
    2,178.96x = 3,753,775.33
  5. Step 5: Solve for x
    x = 3,753,775.33/2,178.96
  6. Step 6: Final answer
    x = 1,722.74

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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.