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Finding the Fourth Proportional to 3,322.92, 4,980.84 and 1,130.88

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Solution

The fourth proportional to 3,322.92, 4,980.84 and 1,130.88 is: 1,695.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,322.92 : 4,980.84 = 1,130.88 : x
  2. Step 2: Convert to fraction form
    3,322.92/4,980.84 = 1,130.88/x
  3. Step 3: Cross multiply
    3,322.92x = 4,980.84 × 1,130.88
  4. Step 4: Simplify right side
    3,322.92x = 5,632,732.34
  5. Step 5: Solve for x
    x = 5,632,732.34/3,322.92
  6. Step 6: Final answer
    x = 1,695.12

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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.