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Finding the Fourth Proportional to 10,369.71, 15,554.57 and 2,578.53

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Solution

The fourth proportional to 10,369.71, 15,554.57 and 2,578.53 is: 3,867.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,369.71 : 15,554.57 = 2,578.53 : x
  2. Step 2: Convert to fraction form
    10,369.71/15,554.57 = 2,578.53/x
  3. Step 3: Cross multiply
    10,369.71x = 15,554.57 × 2,578.53
  4. Step 4: Simplify right side
    10,369.71x = 40,107,912.49
  5. Step 5: Solve for x
    x = 40,107,912.49/10,369.71
  6. Step 6: Final answer
    x = 3,867.80

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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.