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Finding the Fourth Proportional to 7,718.92, 11,578.61 and 2,453.99

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Solution

The fourth proportional to 7,718.92, 11,578.61 and 2,453.99 is: 3,681.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.92 : 11,578.61 = 2,453.99 : x
  2. Step 2: Convert to fraction form
    7,718.92/11,578.61 = 2,453.99/x
  3. Step 3: Cross multiply
    7,718.92x = 11,578.61 × 2,453.99
  4. Step 4: Simplify right side
    7,718.92x = 28,413,741.40
  5. Step 5: Solve for x
    x = 28,413,741.40/7,718.92
  6. Step 6: Final answer
    x = 3,681.05

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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.