Home / 5,718.53-8,580.57-3,121.40

Finding the Fourth Proportional to 5,718.53, 8,580.57 and 3,121.40

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Solution

The fourth proportional to 5,718.53, 8,580.57 and 3,121.40 is: 4,683.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.53 : 8,580.57 = 3,121.40 : x
  2. Step 2: Convert to fraction form
    5,718.53/8,580.57 = 3,121.40/x
  3. Step 3: Cross multiply
    5,718.53x = 8,580.57 × 3,121.40
  4. Step 4: Simplify right side
    5,718.53x = 26,783,400.94
  5. Step 5: Solve for x
    x = 26,783,400.94/5,718.53
  6. Step 6: Final answer
    x = 4,683.61

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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.