Home / 3,358.31-5,039.66-1,278.34

Finding the Fourth Proportional to 3,358.31, 5,039.66 and 1,278.34

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Solution

The fourth proportional to 3,358.31, 5,039.66 and 1,278.34 is: 1,918.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,358.31 : 5,039.66 = 1,278.34 : x
  2. Step 2: Convert to fraction form
    3,358.31/5,039.66 = 1,278.34/x
  3. Step 3: Cross multiply
    3,358.31x = 5,039.66 × 1,278.34
  4. Step 4: Simplify right side
    3,358.31x = 6,442,398.96
  5. Step 5: Solve for x
    x = 6,442,398.96/3,358.31
  6. Step 6: Final answer
    x = 1,918.35

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1.5x scale

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.