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Finding the Fourth Proportional to 7,322.68, 10,985.40 and 2,940.48

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Solution

The fourth proportional to 7,322.68, 10,985.40 and 2,940.48 is: 4,411.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,322.68 : 10,985.40 = 2,940.48 : x
  2. Step 2: Convert to fraction form
    7,322.68/10,985.40 = 2,940.48/x
  3. Step 3: Cross multiply
    7,322.68x = 10,985.40 × 2,940.48
  4. Step 4: Simplify right side
    7,322.68x = 32,302,348.99
  5. Step 5: Solve for x
    x = 32,302,348.99/7,322.68
  6. Step 6: Final answer
    x = 4,411.27

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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.