Home / 3,039.90-4,193.25-1,918.86

Finding the Fourth Proportional to 3,039.90, 4,193.25 and 1,918.86

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Solution

The fourth proportional to 3,039.90, 4,193.25 and 1,918.86 is: 2,646.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,039.90 : 4,193.25 = 1,918.86 : x
  2. Step 2: Convert to fraction form
    3,039.90/4,193.25 = 1,918.86/x
  3. Step 3: Cross multiply
    3,039.90x = 4,193.25 × 1,918.86
  4. Step 4: Simplify right side
    3,039.90x = 8,046,259.70
  5. Step 5: Solve for x
    x = 8,046,259.70/3,039.90
  6. Step 6: Final answer
    x = 2,646.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.