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Finding the Fourth Proportional to 8,756.49, 13,134.75 and 2,913.15

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Solution

The fourth proportional to 8,756.49, 13,134.75 and 2,913.15 is: 4,369.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,756.49 : 13,134.75 = 2,913.15 : x
  2. Step 2: Convert to fraction form
    8,756.49/13,134.75 = 2,913.15/x
  3. Step 3: Cross multiply
    8,756.49x = 13,134.75 × 2,913.15
  4. Step 4: Simplify right side
    8,756.49x = 38,263,496.96
  5. Step 5: Solve for x
    x = 38,263,496.96/8,756.49
  6. Step 6: Final answer
    x = 4,369.73

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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.