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Finding the Fourth Proportional to 10,369.66, 15,554.49 and 2,578.47

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Solution

The fourth proportional to 10,369.66, 15,554.49 and 2,578.47 is: 3,867.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369.66 : 15,554.49 = 2,578.47 : x
  2. Step 2: Convert to fraction form
    10,369.66/15,554.49 = 2,578.47/x
  3. Step 3: Cross multiply
    10,369.66x = 15,554.49 × 2,578.47
  4. Step 4: Simplify right side
    10,369.66x = 40,106,834.49
  5. Step 5: Solve for x
    x = 40,106,834.49/10,369.66
  6. Step 6: Final answer
    x = 3,867.71

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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.