Home / 2,838.72-3,919.32-1,778.08

Finding the Fourth Proportional to 2,838.72, 3,919.32 and 1,778.08

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Solution

The fourth proportional to 2,838.72, 3,919.32 and 1,778.08 is: 2,454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,838.72 : 3,919.32 = 1,778.08 : x
  2. Step 2: Convert to fraction form
    2,838.72/3,919.32 = 1,778.08/x
  3. Step 3: Cross multiply
    2,838.72x = 3,919.32 × 1,778.08
  4. Step 4: Simplify right side
    2,838.72x = 6,968,864.51
  5. Step 5: Solve for x
    x = 6,968,864.51/2,838.72
  6. Step 6: Final answer
    x = 2,454.93

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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.