Home / 5,521.12-8,281.76-1,361.12

Finding the Fourth Proportional to 5,521.12, 8,281.76 and 1,361.12

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Solution

The fourth proportional to 5,521.12, 8,281.76 and 1,361.12 is: 2,041.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.12 : 8,281.76 = 1,361.12 : x
  2. Step 2: Convert to fraction form
    5,521.12/8,281.76 = 1,361.12/x
  3. Step 3: Cross multiply
    5,521.12x = 8,281.76 × 1,361.12
  4. Step 4: Simplify right side
    5,521.12x = 11,272,469.17
  5. Step 5: Solve for x
    x = 11,272,469.17/5,521.12
  6. Step 6: Final answer
    x = 2,041.70

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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.