Home / 3,512.86-5,268.32-1,320.39

Finding the Fourth Proportional to 3,512.86, 5,268.32 and 1,320.39

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Solution

The fourth proportional to 3,512.86, 5,268.32 and 1,320.39 is: 1,980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.86 : 5,268.32 = 1,320.39 : x
  2. Step 2: Convert to fraction form
    3,512.86/5,268.32 = 1,320.39/x
  3. Step 3: Cross multiply
    3,512.86x = 5,268.32 × 1,320.39
  4. Step 4: Simplify right side
    3,512.86x = 6,956,237.04
  5. Step 5: Solve for x
    x = 6,956,237.04/3,512.86
  6. Step 6: Final answer
    x = 1,980.22

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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.