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Finding the Fourth Proportional to 8,918.67, 12,296.58 and 5,726.33

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Solution

The fourth proportional to 8,918.67, 12,296.58 and 5,726.33 is: 7,895.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.67 : 12,296.58 = 5,726.33 : x
  2. Step 2: Convert to fraction form
    8,918.67/12,296.58 = 5,726.33/x
  3. Step 3: Cross multiply
    8,918.67x = 12,296.58 × 5,726.33
  4. Step 4: Simplify right side
    8,918.67x = 70,414,238.11
  5. Step 5: Solve for x
    x = 70,414,238.11/8,918.67
  6. Step 6: Final answer
    x = 7,895.15

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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.