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Finding the Fourth Proportional to 8,763.39, 13,081.19 and 7,656.22

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Solution

The fourth proportional to 8,763.39, 13,081.19 and 7,656.22 is: 11,428.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,763.39 : 13,081.19 = 7,656.22 : x
  2. Step 2: Convert to fraction form
    8,763.39/13,081.19 = 7,656.22/x
  3. Step 3: Cross multiply
    8,763.39x = 13,081.19 × 7,656.22
  4. Step 4: Simplify right side
    8,763.39x = 100,152,468.50
  5. Step 5: Solve for x
    x = 100,152,468.50/8,763.39
  6. Step 6: Final answer
    x = 11,428.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.