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Finding the Fourth Proportional to 5,718.72, 8,579.36 and 1,823.36

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Solution

The fourth proportional to 5,718.72, 8,579.36 and 1,823.36 is: 2,735.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.72 : 8,579.36 = 1,823.36 : x
  2. Step 2: Convert to fraction form
    5,718.72/8,579.36 = 1,823.36/x
  3. Step 3: Cross multiply
    5,718.72x = 8,579.36 × 1,823.36
  4. Step 4: Simplify right side
    5,718.72x = 15,643,261.85
  5. Step 5: Solve for x
    x = 15,643,261.85/5,718.72
  6. Step 6: Final answer
    x = 2,735.45

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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.