Home / 2,908.85-4,013.82-1,729.69

Finding the Fourth Proportional to 2,908.85, 4,013.82 and 1,729.69

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Solution

The fourth proportional to 2,908.85, 4,013.82 and 1,729.69 is: 2,386.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,908.85 : 4,013.82 = 1,729.69 : x
  2. Step 2: Convert to fraction form
    2,908.85/4,013.82 = 1,729.69/x
  3. Step 3: Cross multiply
    2,908.85x = 4,013.82 × 1,729.69
  4. Step 4: Simplify right side
    2,908.85x = 6,942,654.28
  5. Step 5: Solve for x
    x = 6,942,654.28/2,908.85
  6. Step 6: Final answer
    x = 2,386.74

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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.