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Finding the Fourth Proportional to 8,424.17, 11,621.64 and 5,065.03

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Solution

The fourth proportional to 8,424.17, 11,621.64 and 5,065.03 is: 6,987.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,424.17 : 11,621.64 = 5,065.03 : x
  2. Step 2: Convert to fraction form
    8,424.17/11,621.64 = 5,065.03/x
  3. Step 3: Cross multiply
    8,424.17x = 11,621.64 × 5,065.03
  4. Step 4: Simplify right side
    8,424.17x = 58,863,988.77
  5. Step 5: Solve for x
    x = 58,863,988.77/8,424.17
  6. Step 6: Final answer
    x = 6,987.51

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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.