Home / 3,411.60-5,120.10-1,332.60

Finding the Fourth Proportional to 3,411.60, 5,120.10 and 1,332.60

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Solution

The fourth proportional to 3,411.60, 5,120.10 and 1,332.60 is: 1,999.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.60 : 5,120.10 = 1,332.60 : x
  2. Step 2: Convert to fraction form
    3,411.60/5,120.10 = 1,332.60/x
  3. Step 3: Cross multiply
    3,411.60x = 5,120.10 × 1,332.60
  4. Step 4: Simplify right side
    3,411.60x = 6,823,045.26
  5. Step 5: Solve for x
    x = 6,823,045.26/3,411.60
  6. Step 6: Final answer
    x = 1,999.95

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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.