Home / 3,411.88-5,116.80-1,220.12

Finding the Fourth Proportional to 3,411.88, 5,116.80 and 1,220.12

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Solution

The fourth proportional to 3,411.88, 5,116.80 and 1,220.12 is: 1,829.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.88 : 5,116.80 = 1,220.12 : x
  2. Step 2: Convert to fraction form
    3,411.88/5,116.80 = 1,220.12/x
  3. Step 3: Cross multiply
    3,411.88x = 5,116.80 × 1,220.12
  4. Step 4: Simplify right side
    3,411.88x = 6,243,110.02
  5. Step 5: Solve for x
    x = 6,243,110.02/3,411.88
  6. Step 6: Final answer
    x = 1,829.82

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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.