Home / 2,781.66-4,169.58-1,319.07

Finding the Fourth Proportional to 2,781.66, 4,169.58 and 1,319.07

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Solution

The fourth proportional to 2,781.66, 4,169.58 and 1,319.07 is: 1,977.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.66 : 4,169.58 = 1,319.07 : x
  2. Step 2: Convert to fraction form
    2,781.66/4,169.58 = 1,319.07/x
  3. Step 3: Cross multiply
    2,781.66x = 4,169.58 × 1,319.07
  4. Step 4: Simplify right side
    2,781.66x = 5,499,967.89
  5. Step 5: Solve for x
    x = 5,499,967.89/2,781.66
  6. Step 6: Final answer
    x = 1,977.23

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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.