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Finding the Fourth Proportional to 7,643.68, 10,550.15 and 4,661.16

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Solution

The fourth proportional to 7,643.68, 10,550.15 and 4,661.16 is: 6,433.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,643.68 : 10,550.15 = 4,661.16 : x
  2. Step 2: Convert to fraction form
    7,643.68/10,550.15 = 4,661.16/x
  3. Step 3: Cross multiply
    7,643.68x = 10,550.15 × 4,661.16
  4. Step 4: Simplify right side
    7,643.68x = 49,175,937.17
  5. Step 5: Solve for x
    x = 49,175,937.17/7,643.68
  6. Step 6: Final answer
    x = 6,433.54

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.