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Finding the Fourth Proportional to 5,102.58, 7,653.15 and 1,815.20

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Solution

The fourth proportional to 5,102.58, 7,653.15 and 1,815.20 is: 2,722.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,102.58 : 7,653.15 = 1,815.20 : x
  2. Step 2: Convert to fraction form
    5,102.58/7,653.15 = 1,815.20/x
  3. Step 3: Cross multiply
    5,102.58x = 7,653.15 × 1,815.20
  4. Step 4: Simplify right side
    5,102.58x = 13,891,959.61
  5. Step 5: Solve for x
    x = 13,891,959.61/5,102.58
  6. Step 6: Final answer
    x = 2,722.54

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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.