Home / 1,812.32-2,720.39-1,605.43

Finding the Fourth Proportional to 1,812.32, 2,720.39 and 1,605.43

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Solution

The fourth proportional to 1,812.32, 2,720.39 and 1,605.43 is: 2,409.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.32 : 2,720.39 = 1,605.43 : x
  2. Step 2: Convert to fraction form
    1,812.32/2,720.39 = 1,605.43/x
  3. Step 3: Cross multiply
    1,812.32x = 2,720.39 × 1,605.43
  4. Step 4: Simplify right side
    1,812.32x = 4,367,395.72
  5. Step 5: Solve for x
    x = 4,367,395.72/1,812.32
  6. Step 6: Final answer
    x = 2,409.84

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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.