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Finding the Fourth Proportional to 8,616.99, 12,904.71 and 4,907.97

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Solution

The fourth proportional to 8,616.99, 12,904.71 and 4,907.97 is: 7,350.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,616.99 : 12,904.71 = 4,907.97 : x
  2. Step 2: Convert to fraction form
    8,616.99/12,904.71 = 4,907.97/x
  3. Step 3: Cross multiply
    8,616.99x = 12,904.71 × 4,907.97
  4. Step 4: Simplify right side
    8,616.99x = 63,335,929.54
  5. Step 5: Solve for x
    x = 63,335,929.54/8,616.99
  6. Step 6: Final answer
    x = 7,350.12

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1.5x scale

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.