Home / 3,126.20-4,690.20-935.09

Finding the Fourth Proportional to 3,126.20, 4,690.20 and 935.09

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Solution

The fourth proportional to 3,126.20, 4,690.20 and 935.09 is: 1,402.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.20 : 4,690.20 = 935.09 : x
  2. Step 2: Convert to fraction form
    3,126.20/4,690.20 = 935.09/x
  3. Step 3: Cross multiply
    3,126.20x = 4,690.20 × 935.09
  4. Step 4: Simplify right side
    3,126.20x = 4,385,783.14
  5. Step 5: Solve for x
    x = 4,385,783.14/3,126.20
  6. Step 6: Final answer
    x = 1,402.91

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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.