Home / 2,168.57-3,249.93-1,126.40

Finding the Fourth Proportional to 2,168.57, 3,249.93 and 1,126.40

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Solution

The fourth proportional to 2,168.57, 3,249.93 and 1,126.40 is: 1,688.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.57 : 3,249.93 = 1,126.40 : x
  2. Step 2: Convert to fraction form
    2,168.57/3,249.93 = 1,126.40/x
  3. Step 3: Cross multiply
    2,168.57x = 3,249.93 × 1,126.40
  4. Step 4: Simplify right side
    2,168.57x = 3,660,704.90
  5. Step 5: Solve for x
    x = 3,660,704.90/2,168.57
  6. Step 6: Final answer
    x = 1,688.08

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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.