Home / 3,990.30-5,506.34-2,197.64

Finding the Fourth Proportional to 3,990.30, 5,506.34 and 2,197.64

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Solution

The fourth proportional to 3,990.30, 5,506.34 and 2,197.64 is: 3,032.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.30 : 5,506.34 = 2,197.64 : x
  2. Step 2: Convert to fraction form
    3,990.30/5,506.34 = 2,197.64/x
  3. Step 3: Cross multiply
    3,990.30x = 5,506.34 × 2,197.64
  4. Step 4: Simplify right side
    3,990.30x = 12,100,953.04
  5. Step 5: Solve for x
    x = 12,100,953.04/3,990.30
  6. Step 6: Final answer
    x = 3,032.59

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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.