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Finding the Fourth Proportional to 8,620.62, 11,900.98 and 5,802.82

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Solution

The fourth proportional to 8,620.62, 11,900.98 and 5,802.82 is: 8,010.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,620.62 : 11,900.98 = 5,802.82 : x
  2. Step 2: Convert to fraction form
    8,620.62/11,900.98 = 5,802.82/x
  3. Step 3: Cross multiply
    8,620.62x = 11,900.98 × 5,802.82
  4. Step 4: Simplify right side
    8,620.62x = 69,059,244.76
  5. Step 5: Solve for x
    x = 69,059,244.76/8,620.62
  6. Step 6: Final answer
    x = 8,010.94

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1.5x scale

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.