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Finding the Fourth Proportional to 4,993.50, 7,490.61 and 1,915.50

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Solution

The fourth proportional to 4,993.50, 7,490.61 and 1,915.50 is: 2,873.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,993.50 : 7,490.61 = 1,915.50 : x
  2. Step 2: Convert to fraction form
    4,993.50/7,490.61 = 1,915.50/x
  3. Step 3: Cross multiply
    4,993.50x = 7,490.61 × 1,915.50
  4. Step 4: Simplify right side
    4,993.50x = 14,348,263.46
  5. Step 5: Solve for x
    x = 14,348,263.46/4,993.50
  6. Step 6: Final answer
    x = 2,873.39

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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.