Home / 3,990.16-5,506.27-2,221.93

Finding the Fourth Proportional to 3,990.16, 5,506.27 and 2,221.93

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Solution

The fourth proportional to 3,990.16, 5,506.27 and 2,221.93 is: 3,066.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.16 : 5,506.27 = 2,221.93 : x
  2. Step 2: Convert to fraction form
    3,990.16/5,506.27 = 2,221.93/x
  3. Step 3: Cross multiply
    3,990.16x = 5,506.27 × 2,221.93
  4. Step 4: Simplify right side
    3,990.16x = 12,234,546.50
  5. Step 5: Solve for x
    x = 12,234,546.50/3,990.16
  6. Step 6: Final answer
    x = 3,066.18

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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.