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Finding the Fourth Proportional to 7,076.88, 10,606.20 and 2,911.88

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Solution

The fourth proportional to 7,076.88, 10,606.20 and 2,911.88 is: 4,364.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,076.88 : 10,606.20 = 2,911.88 : x
  2. Step 2: Convert to fraction form
    7,076.88/10,606.20 = 2,911.88/x
  3. Step 3: Cross multiply
    7,076.88x = 10,606.20 × 2,911.88
  4. Step 4: Simplify right side
    7,076.88x = 30,883,981.66
  5. Step 5: Solve for x
    x = 30,883,981.66/7,076.88
  6. Step 6: Final answer
    x = 4,364.07

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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.