Home / 2,684.80-3,704.28-1,691.40

Finding the Fourth Proportional to 2,684.80, 3,704.28 and 1,691.40

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Solution

The fourth proportional to 2,684.80, 3,704.28 and 1,691.40 is: 2,333.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,684.80 : 3,704.28 = 1,691.40 : x
  2. Step 2: Convert to fraction form
    2,684.80/3,704.28 = 1,691.40/x
  3. Step 3: Cross multiply
    2,684.80x = 3,704.28 × 1,691.40
  4. Step 4: Simplify right side
    2,684.80x = 6,265,419.19
  5. Step 5: Solve for x
    x = 6,265,419.19/2,684.80
  6. Step 6: Final answer
    x = 2,333.66

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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.