Home / 5,521.81-7,620.14-3,164.11

Finding the Fourth Proportional to 5,521.81, 7,620.14 and 3,164.11

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Solution

The fourth proportional to 5,521.81, 7,620.14 and 3,164.11 is: 4,366.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,521.81 : 7,620.14 = 3,164.11 : x
  2. Step 2: Convert to fraction form
    5,521.81/7,620.14 = 3,164.11/x
  3. Step 3: Cross multiply
    5,521.81x = 7,620.14 × 3,164.11
  4. Step 4: Simplify right side
    5,521.81x = 24,110,961.18
  5. Step 5: Solve for x
    x = 24,110,961.18/5,521.81
  6. Step 6: Final answer
    x = 4,366.50

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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.