Home / 1,451.35-2,177.07-757.09

Finding the Fourth Proportional to 1,451.35, 2,177.07 and 757.09

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Solution

The fourth proportional to 1,451.35, 2,177.07 and 757.09 is: 1,135.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451.35 : 2,177.07 = 757.09 : x
  2. Step 2: Convert to fraction form
    1,451.35/2,177.07 = 757.09/x
  3. Step 3: Cross multiply
    1,451.35x = 2,177.07 × 757.09
  4. Step 4: Simplify right side
    1,451.35x = 1,648,237.93
  5. Step 5: Solve for x
    x = 1,648,237.93/1,451.35
  6. Step 6: Final answer
    x = 1,135.66

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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.