Home / 3,138.76-4,331.29-1,794.51

Finding the Fourth Proportional to 3,138.76, 4,331.29 and 1,794.51

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Solution

The fourth proportional to 3,138.76, 4,331.29 and 1,794.51 is: 2,476.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.76 : 4,331.29 = 1,794.51 : x
  2. Step 2: Convert to fraction form
    3,138.76/4,331.29 = 1,794.51/x
  3. Step 3: Cross multiply
    3,138.76x = 4,331.29 × 1,794.51
  4. Step 4: Simplify right side
    3,138.76x = 7,772,512.59
  5. Step 5: Solve for x
    x = 7,772,512.59/3,138.76
  6. Step 6: Final answer
    x = 2,476.30

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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.