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Finding the Fourth Proportional to 8,504.77, 11,721.21 and 7,088.68

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Solution

The fourth proportional to 8,504.77, 11,721.21 and 7,088.68 is: 9,769.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,504.77 : 11,721.21 = 7,088.68 : x
  2. Step 2: Convert to fraction form
    8,504.77/11,721.21 = 7,088.68/x
  3. Step 3: Cross multiply
    8,504.77x = 11,721.21 × 7,088.68
  4. Step 4: Simplify right side
    8,504.77x = 83,087,906.90
  5. Step 5: Solve for x
    x = 83,087,906.90/8,504.77
  6. Step 6: Final answer
    x = 9,769.57

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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.