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Finding the Fourth Proportional to 5,322.71, 7,985.18 and 1,812.44

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Solution

The fourth proportional to 5,322.71, 7,985.18 and 1,812.44 is: 2,719.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,322.71 : 7,985.18 = 1,812.44 : x
  2. Step 2: Convert to fraction form
    5,322.71/7,985.18 = 1,812.44/x
  3. Step 3: Cross multiply
    5,322.71x = 7,985.18 × 1,812.44
  4. Step 4: Simplify right side
    5,322.71x = 14,472,684.13
  5. Step 5: Solve for x
    x = 14,472,684.13/5,322.71
  6. Step 6: Final answer
    x = 2,719.04

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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.