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Finding the Fourth Proportional to 9,940.79, 14,911.10 and 2,545.23

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Solution

The fourth proportional to 9,940.79, 14,911.10 and 2,545.23 is: 3,817.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,940.79 : 14,911.10 = 2,545.23 : x
  2. Step 2: Convert to fraction form
    9,940.79/14,911.10 = 2,545.23/x
  3. Step 3: Cross multiply
    9,940.79x = 14,911.10 × 2,545.23
  4. Step 4: Simplify right side
    9,940.79x = 37,952,179.05
  5. Step 5: Solve for x
    x = 37,952,179.05/9,940.79
  6. Step 6: Final answer
    x = 3,817.82

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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.