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Finding the Fourth Proportional to 7,490.61, 11,234.97 and 1,943.60

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Solution

The fourth proportional to 7,490.61, 11,234.97 and 1,943.60 is: 2,915.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,490.61 : 11,234.97 = 1,943.60 : x
  2. Step 2: Convert to fraction form
    7,490.61/11,234.97 = 1,943.60/x
  3. Step 3: Cross multiply
    7,490.61x = 11,234.97 × 1,943.60
  4. Step 4: Simplify right side
    7,490.61x = 21,836,231.52
  5. Step 5: Solve for x
    x = 21,836,231.52/7,490.61
  6. Step 6: Final answer
    x = 2,915.15

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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.