Home / 1,425.17-2,136.84-936.74

Finding the Fourth Proportional to 1,425.17, 2,136.84 and 936.74

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Solution

The fourth proportional to 1,425.17, 2,136.84 and 936.74 is: 1,404.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.17 : 2,136.84 = 936.74 : x
  2. Step 2: Convert to fraction form
    1,425.17/2,136.84 = 936.74/x
  3. Step 3: Cross multiply
    1,425.17x = 2,136.84 × 936.74
  4. Step 4: Simplify right side
    1,425.17x = 2,001,665.33
  5. Step 5: Solve for x
    x = 2,001,665.33/1,425.17
  6. Step 6: Final answer
    x = 1,404.51

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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.