Home / 3,121.36-4,306.90-1,795.12

Finding the Fourth Proportional to 3,121.36, 4,306.90 and 1,795.12

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Solution

The fourth proportional to 3,121.36, 4,306.90 and 1,795.12 is: 2,476.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.36 : 4,306.90 = 1,795.12 : x
  2. Step 2: Convert to fraction form
    3,121.36/4,306.90 = 1,795.12/x
  3. Step 3: Cross multiply
    3,121.36x = 4,306.90 × 1,795.12
  4. Step 4: Simplify right side
    3,121.36x = 7,731,402.33
  5. Step 5: Solve for x
    x = 7,731,402.33/3,121.36
  6. Step 6: Final answer
    x = 2,476.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.