Home / 3,990.42-5,506.59-2,197.84

Finding the Fourth Proportional to 3,990.42, 5,506.59 and 2,197.84

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Solution

The fourth proportional to 3,990.42, 5,506.59 and 2,197.84 is: 3,032.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990.42 : 5,506.59 = 2,197.84 : x
  2. Step 2: Convert to fraction form
    3,990.42/5,506.59 = 2,197.84/x
  3. Step 3: Cross multiply
    3,990.42x = 5,506.59 × 2,197.84
  4. Step 4: Simplify right side
    3,990.42x = 12,102,603.77
  5. Step 5: Solve for x
    x = 12,102,603.77/3,990.42
  6. Step 6: Final answer
    x = 3,032.91

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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.