Home / 3,400.90-5,100.75-935.12

Finding the Fourth Proportional to 3,400.90, 5,100.75 and 935.12

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Solution

The fourth proportional to 3,400.90, 5,100.75 and 935.12 is: 1,402.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,400.90 : 5,100.75 = 935.12 : x
  2. Step 2: Convert to fraction form
    3,400.90/5,100.75 = 935.12/x
  3. Step 3: Cross multiply
    3,400.90x = 5,100.75 × 935.12
  4. Step 4: Simplify right side
    3,400.90x = 4,769,808.66
  5. Step 5: Solve for x
    x = 4,769,808.66/3,400.90
  6. Step 6: Final answer
    x = 1,402.52

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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.