Home / 2,757.62-4,138.86-1,115.35

Finding the Fourth Proportional to 2,757.62, 4,138.86 and 1,115.35

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Solution

The fourth proportional to 2,757.62, 4,138.86 and 1,115.35 is: 1,674.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,757.62 : 4,138.86 = 1,115.35 : x
  2. Step 2: Convert to fraction form
    2,757.62/4,138.86 = 1,115.35/x
  3. Step 3: Cross multiply
    2,757.62x = 4,138.86 × 1,115.35
  4. Step 4: Simplify right side
    2,757.62x = 4,616,277.50
  5. Step 5: Solve for x
    x = 4,616,277.50/2,757.62
  6. Step 6: Final answer
    x = 1,674.01

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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.