Home / 3,589.86-5,382.96-1,640.39

Finding the Fourth Proportional to 3,589.86, 5,382.96 and 1,640.39

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Solution

The fourth proportional to 3,589.86, 5,382.96 and 1,640.39 is: 2,459.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,589.86 : 5,382.96 = 1,640.39 : x
  2. Step 2: Convert to fraction form
    3,589.86/5,382.96 = 1,640.39/x
  3. Step 3: Cross multiply
    3,589.86x = 5,382.96 × 1,640.39
  4. Step 4: Simplify right side
    3,589.86x = 8,830,164.81
  5. Step 5: Solve for x
    x = 8,830,164.81/3,589.86
  6. Step 6: Final answer
    x = 2,459.75

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1.5x scale

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.