Home / 3,990.74-5,506.43-2,222.26

Finding the Fourth Proportional to 3,990.74, 5,506.43 and 2,222.26

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Solution

The fourth proportional to 3,990.74, 5,506.43 and 2,222.26 is: 3,066.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.74 : 5,506.43 = 2,222.26 : x
  2. Step 2: Convert to fraction form
    3,990.74/5,506.43 = 2,222.26/x
  3. Step 3: Cross multiply
    3,990.74x = 5,506.43 × 2,222.26
  4. Step 4: Simplify right side
    3,990.74x = 12,236,719.13
  5. Step 5: Solve for x
    x = 12,236,719.13/3,990.74
  6. Step 6: Final answer
    x = 3,066.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.