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Finding the Fourth Proportional to 7,587.76, 11,379.84 and 2,656

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Solution

The fourth proportional to 7,587.76, 11,379.84 and 2,656 is: 3,983.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,587.76 : 11,379.84 = 2,656 : x
  2. Step 2: Convert to fraction form
    7,587.76/11,379.84 = 2,656/x
  3. Step 3: Cross multiply
    7,587.76x = 11,379.84 × 2,656
  4. Step 4: Simplify right side
    7,587.76x = 30,224,855.04
  5. Step 5: Solve for x
    x = 30,224,855.04/7,587.76
  6. Step 6: Final answer
    x = 3,983.37

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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.