Home / 3,681.21-5,521.33-2,181.12

Finding the Fourth Proportional to 3,681.21, 5,521.33 and 2,181.12

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Solution

The fourth proportional to 3,681.21, 5,521.33 and 2,181.12 is: 3,271.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,681.21 : 5,521.33 = 2,181.12 : x
  2. Step 2: Convert to fraction form
    3,681.21/5,521.33 = 2,181.12/x
  3. Step 3: Cross multiply
    3,681.21x = 5,521.33 × 2,181.12
  4. Step 4: Simplify right side
    3,681.21x = 12,042,683.29
  5. Step 5: Solve for x
    x = 12,042,683.29/3,681.21
  6. Step 6: Final answer
    x = 3,271.39

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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.