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Finding the Fourth Proportional to 7,322.58, 10,981.47 and 3,159.99

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Solution

The fourth proportional to 7,322.58, 10,981.47 and 3,159.99 is: 4,738.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.58 : 10,981.47 = 3,159.99 : x
  2. Step 2: Convert to fraction form
    7,322.58/10,981.47 = 3,159.99/x
  3. Step 3: Cross multiply
    7,322.58x = 10,981.47 × 3,159.99
  4. Step 4: Simplify right side
    7,322.58x = 34,701,316.35
  5. Step 5: Solve for x
    x = 34,701,316.35/7,322.58
  6. Step 6: Final answer
    x = 4,738.95

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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.