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Finding the Fourth Proportional to 5,718.77, 8,578.04 and 2,388.81

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Solution

The fourth proportional to 5,718.77, 8,578.04 and 2,388.81 is: 3,583.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.77 : 8,578.04 = 2,388.81 : x
  2. Step 2: Convert to fraction form
    5,718.77/8,578.04 = 2,388.81/x
  3. Step 3: Cross multiply
    5,718.77x = 8,578.04 × 2,388.81
  4. Step 4: Simplify right side
    5,718.77x = 20,491,307.73
  5. Step 5: Solve for x
    x = 20,491,307.73/5,718.77
  6. Step 6: Final answer
    x = 3,583.17

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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.