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Finding the Fourth Proportional to 11,805.50, 17,708.18 and 3,040.40

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Solution

The fourth proportional to 11,805.50, 17,708.18 and 3,040.40 is: 4,560.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,805.50 : 17,708.18 = 3,040.40 : x
  2. Step 2: Convert to fraction form
    11,805.50/17,708.18 = 3,040.40/x
  3. Step 3: Cross multiply
    11,805.50x = 17,708.18 × 3,040.40
  4. Step 4: Simplify right side
    11,805.50x = 53,839,950.47
  5. Step 5: Solve for x
    x = 53,839,950.47/11,805.50
  6. Step 6: Final answer
    x = 4,560.58

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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.