Home / 2,781.38-4,164.77-1,955.18

Finding the Fourth Proportional to 2,781.38, 4,164.77 and 1,955.18

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Solution

The fourth proportional to 2,781.38, 4,164.77 and 1,955.18 is: 2,927.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.38 : 4,164.77 = 1,955.18 : x
  2. Step 2: Convert to fraction form
    2,781.38/4,164.77 = 1,955.18/x
  3. Step 3: Cross multiply
    2,781.38x = 4,164.77 × 1,955.18
  4. Step 4: Simplify right side
    2,781.38x = 8,142,890.31
  5. Step 5: Solve for x
    x = 8,142,890.31/2,781.38
  6. Step 6: Final answer
    x = 2,927.64

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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.