Home / 3,411.20-5,116.80-1,102.64

Finding the Fourth Proportional to 3,411.20, 5,116.80 and 1,102.64

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Solution

The fourth proportional to 3,411.20, 5,116.80 and 1,102.64 is: 1,653.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.20 : 5,116.80 = 1,102.64 : x
  2. Step 2: Convert to fraction form
    3,411.20/5,116.80 = 1,102.64/x
  3. Step 3: Cross multiply
    3,411.20x = 5,116.80 × 1,102.64
  4. Step 4: Simplify right side
    3,411.20x = 5,641,988.35
  5. Step 5: Solve for x
    x = 5,641,988.35/3,411.20
  6. Step 6: Final answer
    x = 1,653.96

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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.