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Finding the Fourth Proportional to 7,276.78, 10,915.87 and 2,893.26

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Solution

The fourth proportional to 7,276.78, 10,915.87 and 2,893.26 is: 4,340.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,276.78 : 10,915.87 = 2,893.26 : x
  2. Step 2: Convert to fraction form
    7,276.78/10,915.87 = 2,893.26/x
  3. Step 3: Cross multiply
    7,276.78x = 10,915.87 × 2,893.26
  4. Step 4: Simplify right side
    7,276.78x = 31,582,450.04
  5. Step 5: Solve for x
    x = 31,582,450.04/7,276.78
  6. Step 6: Final answer
    x = 4,340.17

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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.