Home / 5,820.15-8,724.78-2,121.45

Finding the Fourth Proportional to 5,820.15, 8,724.78 and 2,121.45

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Solution

The fourth proportional to 5,820.15, 8,724.78 and 2,121.45 is: 3,180.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,820.15 : 8,724.78 = 2,121.45 : x
  2. Step 2: Convert to fraction form
    5,820.15/8,724.78 = 2,121.45/x
  3. Step 3: Cross multiply
    5,820.15x = 8,724.78 × 2,121.45
  4. Step 4: Simplify right side
    5,820.15x = 18,509,184.53
  5. Step 5: Solve for x
    x = 18,509,184.53/5,820.15
  6. Step 6: Final answer
    x = 3,180.19

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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.