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Finding the Fourth Proportional to 7,124.76, 10,689.99 and 2,967.64

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Solution

The fourth proportional to 7,124.76, 10,689.99 and 2,967.64 is: 4,452.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,124.76 : 10,689.99 = 2,967.64 : x
  2. Step 2: Convert to fraction form
    7,124.76/10,689.99 = 2,967.64/x
  3. Step 3: Cross multiply
    7,124.76x = 10,689.99 × 2,967.64
  4. Step 4: Simplify right side
    7,124.76x = 31,724,041.92
  5. Step 5: Solve for x
    x = 31,724,041.92/7,124.76
  6. Step 6: Final answer
    x = 4,452.65

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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.