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Finding the Fourth Proportional to 7,947.02, 11,920.53 and 2,752.89

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Solution

The fourth proportional to 7,947.02, 11,920.53 and 2,752.89 is: 4,129.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,947.02 : 11,920.53 = 2,752.89 : x
  2. Step 2: Convert to fraction form
    7,947.02/11,920.53 = 2,752.89/x
  3. Step 3: Cross multiply
    7,947.02x = 11,920.53 × 2,752.89
  4. Step 4: Simplify right side
    7,947.02x = 32,815,907.83
  5. Step 5: Solve for x
    x = 32,815,907.83/7,947.02
  6. Step 6: Final answer
    x = 4,129.34

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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.