Home / 3,411.68-5,118.48-1,220.72

Finding the Fourth Proportional to 3,411.68, 5,118.48 and 1,220.72

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Solution

The fourth proportional to 3,411.68, 5,118.48 and 1,220.72 is: 1,831.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.68 : 5,118.48 = 1,220.72 : x
  2. Step 2: Convert to fraction form
    3,411.68/5,118.48 = 1,220.72/x
  3. Step 3: Cross multiply
    3,411.68x = 5,118.48 × 1,220.72
  4. Step 4: Simplify right side
    3,411.68x = 6,248,230.91
  5. Step 5: Solve for x
    x = 6,248,230.91/3,411.68
  6. Step 6: Final answer
    x = 1,831.42

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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.