Home / 3,126.70-4,688.97-935.38

Finding the Fourth Proportional to 3,126.70, 4,688.97 and 935.38

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Solution

The fourth proportional to 3,126.70, 4,688.97 and 935.38 is: 1,402.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.70 : 4,688.97 = 935.38 : x
  2. Step 2: Convert to fraction form
    3,126.70/4,688.97 = 935.38/x
  3. Step 3: Cross multiply
    3,126.70x = 4,688.97 × 935.38
  4. Step 4: Simplify right side
    3,126.70x = 4,385,968.76
  5. Step 5: Solve for x
    x = 4,385,968.76/3,126.70
  6. Step 6: Final answer
    x = 1,402.75

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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.