Home / 3,139.16-4,331.82-1,812.62

Finding the Fourth Proportional to 3,139.16, 4,331.82 and 1,812.62

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Solution

The fourth proportional to 3,139.16, 4,331.82 and 1,812.62 is: 2,501.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.16 : 4,331.82 = 1,812.62 : x
  2. Step 2: Convert to fraction form
    3,139.16/4,331.82 = 1,812.62/x
  3. Step 3: Cross multiply
    3,139.16x = 4,331.82 × 1,812.62
  4. Step 4: Simplify right side
    3,139.16x = 7,851,943.57
  5. Step 5: Solve for x
    x = 7,851,943.57/3,139.16
  6. Step 6: Final answer
    x = 2,501.29

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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.