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Finding the Fourth Proportional to 8,891.12, 12,260.53 and 7,636.32

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Solution

The fourth proportional to 8,891.12, 12,260.53 and 7,636.32 is: 10,530.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.12 : 12,260.53 = 7,636.32 : x
  2. Step 2: Convert to fraction form
    8,891.12/12,260.53 = 7,636.32/x
  3. Step 3: Cross multiply
    8,891.12x = 12,260.53 × 7,636.32
  4. Step 4: Simplify right side
    8,891.12x = 93,625,311.36
  5. Step 5: Solve for x
    x = 93,625,311.36/8,891.12
  6. Step 6: Final answer
    x = 10,530.21

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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.