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Finding the Fourth Proportional to 5,384.65, 8,078.19 and 1,874.82

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Solution

The fourth proportional to 5,384.65, 8,078.19 and 1,874.82 is: 2,812.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,384.65 : 8,078.19 = 1,874.82 : x
  2. Step 2: Convert to fraction form
    5,384.65/8,078.19 = 1,874.82/x
  3. Step 3: Cross multiply
    5,384.65x = 8,078.19 × 1,874.82
  4. Step 4: Simplify right side
    5,384.65x = 15,145,152.18
  5. Step 5: Solve for x
    x = 15,145,152.18/5,384.65
  6. Step 6: Final answer
    x = 2,812.65

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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.