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Finding the Fourth Proportional to 7,276.74, 10,915.17 and 2,895.31

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Solution

The fourth proportional to 7,276.74, 10,915.17 and 2,895.31 is: 4,342.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,276.74 : 10,915.17 = 2,895.31 : x
  2. Step 2: Convert to fraction form
    7,276.74/10,915.17 = 2,895.31/x
  3. Step 3: Cross multiply
    7,276.74x = 10,915.17 × 2,895.31
  4. Step 4: Simplify right side
    7,276.74x = 31,602,800.85
  5. Step 5: Solve for x
    x = 31,602,800.85/7,276.74
  6. Step 6: Final answer
    x = 4,342.99

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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.