Home / 3,411.72-5,118.64-1,220.47

Finding the Fourth Proportional to 3,411.72, 5,118.64 and 1,220.47

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Solution

The fourth proportional to 3,411.72, 5,118.64 and 1,220.47 is: 1,831.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.72 : 5,118.64 = 1,220.47 : x
  2. Step 2: Convert to fraction form
    3,411.72/5,118.64 = 1,220.47/x
  3. Step 3: Cross multiply
    3,411.72x = 5,118.64 × 1,220.47
  4. Step 4: Simplify right side
    3,411.72x = 6,247,137.58
  5. Step 5: Solve for x
    x = 6,247,137.58/3,411.72
  6. Step 6: Final answer
    x = 1,831.08

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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.