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Finding the Fourth Proportional to 7,888.01, 11,815.05 and 3,721.77

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Solution

The fourth proportional to 7,888.01, 11,815.05 and 3,721.77 is: 5,574.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.01 : 11,815.05 = 3,721.77 : x
  2. Step 2: Convert to fraction form
    7,888.01/11,815.05 = 3,721.77/x
  3. Step 3: Cross multiply
    7,888.01x = 11,815.05 × 3,721.77
  4. Step 4: Simplify right side
    7,888.01x = 43,972,898.64
  5. Step 5: Solve for x
    x = 43,972,898.64/7,888.01
  6. Step 6: Final answer
    x = 5,574.65

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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.