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Finding the Fourth Proportional to 5,147.01, 7,718.49 and 1,815.08

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Solution

The fourth proportional to 5,147.01, 7,718.49 and 1,815.08 is: 2,721.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,147.01 : 7,718.49 = 1,815.08 : x
  2. Step 2: Convert to fraction form
    5,147.01/7,718.49 = 1,815.08/x
  3. Step 3: Cross multiply
    5,147.01x = 7,718.49 × 1,815.08
  4. Step 4: Simplify right side
    5,147.01x = 14,009,638.24
  5. Step 5: Solve for x
    x = 14,009,638.24/5,147.01
  6. Step 6: Final answer
    x = 2,721.90

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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.