Home / 2,612.21-3,605.16-1,729.79

Finding the Fourth Proportional to 2,612.21, 3,605.16 and 1,729.79

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Solution

The fourth proportional to 2,612.21, 3,605.16 and 1,729.79 is: 2,387.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.21 : 3,605.16 = 1,729.79 : x
  2. Step 2: Convert to fraction form
    2,612.21/3,605.16 = 1,729.79/x
  3. Step 3: Cross multiply
    2,612.21x = 3,605.16 × 1,729.79
  4. Step 4: Simplify right side
    2,612.21x = 6,236,169.72
  5. Step 5: Solve for x
    x = 6,236,169.72/2,612.21
  6. Step 6: Final answer
    x = 2,387.32

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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.