Home / 3,411.14-5,116.64-1,221.30

Finding the Fourth Proportional to 3,411.14, 5,116.64 and 1,221.30

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Solution

The fourth proportional to 3,411.14, 5,116.64 and 1,221.30 is: 1,831.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.14 : 5,116.64 = 1,221.30 : x
  2. Step 2: Convert to fraction form
    3,411.14/5,116.64 = 1,221.30/x
  3. Step 3: Cross multiply
    3,411.14x = 5,116.64 × 1,221.30
  4. Step 4: Simplify right side
    3,411.14x = 6,248,946.33
  5. Step 5: Solve for x
    x = 6,248,946.33/3,411.14
  6. Step 6: Final answer
    x = 1,831.93

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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.