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Finding the Fourth Proportional to 8,896.91, 12,278.95 and 5,119.99

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Solution

The fourth proportional to 8,896.91, 12,278.95 and 5,119.99 is: 7,066.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,896.91 : 12,278.95 = 5,119.99 : x
  2. Step 2: Convert to fraction form
    8,896.91/12,278.95 = 5,119.99/x
  3. Step 3: Cross multiply
    8,896.91x = 12,278.95 × 5,119.99
  4. Step 4: Simplify right side
    8,896.91x = 62,868,057.71
  5. Step 5: Solve for x
    x = 62,868,057.71/8,896.91
  6. Step 6: Final answer
    x = 7,066.28

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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.