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Finding the Fourth Proportional to 11,390.76, 17,086.14 and 3,605.04

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Solution

The fourth proportional to 11,390.76, 17,086.14 and 3,605.04 is: 5,407.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.76 : 17,086.14 = 3,605.04 : x
  2. Step 2: Convert to fraction form
    11,390.76/17,086.14 = 3,605.04/x
  3. Step 3: Cross multiply
    11,390.76x = 17,086.14 × 3,605.04
  4. Step 4: Simplify right side
    11,390.76x = 61,596,218.15
  5. Step 5: Solve for x
    x = 61,596,218.15/11,390.76
  6. Step 6: Final answer
    x = 5,407.56

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Similar ratio
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1.5x scale

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.