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Finding the Fourth Proportional to 7,293.60, 10,940.13 and 2,909.88

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Solution

The fourth proportional to 7,293.60, 10,940.13 and 2,909.88 is: 4,364.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,293.60 : 10,940.13 = 2,909.88 : x
  2. Step 2: Convert to fraction form
    7,293.60/10,940.13 = 2,909.88/x
  3. Step 3: Cross multiply
    7,293.60x = 10,940.13 × 2,909.88
  4. Step 4: Simplify right side
    7,293.60x = 31,834,465.48
  5. Step 5: Solve for x
    x = 31,834,465.48/7,293.60
  6. Step 6: Final answer
    x = 4,364.71

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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.