Home / 3,117.78-4,678.56-1,362.48

Finding the Fourth Proportional to 3,117.78, 4,678.56 and 1,362.48

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Solution

The fourth proportional to 3,117.78, 4,678.56 and 1,362.48 is: 2,044.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.78 : 4,678.56 = 1,362.48 : x
  2. Step 2: Convert to fraction form
    3,117.78/4,678.56 = 1,362.48/x
  3. Step 3: Cross multiply
    3,117.78x = 4,678.56 × 1,362.48
  4. Step 4: Simplify right side
    3,117.78x = 6,374,444.43
  5. Step 5: Solve for x
    x = 6,374,444.43/3,117.78
  6. Step 6: Final answer
    x = 2,044.55

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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.