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Finding the Fourth Proportional to 9,186, 13,776.95 and 3,640.59

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Solution

The fourth proportional to 9,186, 13,776.95 and 3,640.59 is: 5,460.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,186 : 13,776.95 = 3,640.59 : x
  2. Step 2: Convert to fraction form
    9,186/13,776.95 = 3,640.59/x
  3. Step 3: Cross multiply
    9,186x = 13,776.95 × 3,640.59
  4. Step 4: Simplify right side
    9,186x = 50,156,208.20
  5. Step 5: Solve for x
    x = 50,156,208.20/9,186
  6. Step 6: Final answer
    x = 5,460.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.