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Finding the Fourth Proportional to 5,719.08, 8,579.90 and 1,615.08

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Solution

The fourth proportional to 5,719.08, 8,579.90 and 1,615.08 is: 2,422.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,719.08 : 8,579.90 = 1,615.08 : x
  2. Step 2: Convert to fraction form
    5,719.08/8,579.90 = 1,615.08/x
  3. Step 3: Cross multiply
    5,719.08x = 8,579.90 × 1,615.08
  4. Step 4: Simplify right side
    5,719.08x = 13,857,224.89
  5. Step 5: Solve for x
    x = 13,857,224.89/5,719.08
  6. Step 6: Final answer
    x = 2,422.98

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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.