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Finding the Fourth Proportional to 7,115.73, 9,815.65 and 4,458.52

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Solution

The fourth proportional to 7,115.73, 9,815.65 and 4,458.52 is: 6,150.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.73 : 9,815.65 = 4,458.52 : x
  2. Step 2: Convert to fraction form
    7,115.73/9,815.65 = 4,458.52/x
  3. Step 3: Cross multiply
    7,115.73x = 9,815.65 × 4,458.52
  4. Step 4: Simplify right side
    7,115.73x = 43,763,271.84
  5. Step 5: Solve for x
    x = 43,763,271.84/7,115.73
  6. Step 6: Final answer
    x = 6,150.22

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.