Home / 3,138.03-4,331.57-1,812.29

Finding the Fourth Proportional to 3,138.03, 4,331.57 and 1,812.29

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Solution

The fourth proportional to 3,138.03, 4,331.57 and 1,812.29 is: 2,501.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.03 : 4,331.57 = 1,812.29 : x
  2. Step 2: Convert to fraction form
    3,138.03/4,331.57 = 1,812.29/x
  3. Step 3: Cross multiply
    3,138.03x = 4,331.57 × 1,812.29
  4. Step 4: Simplify right side
    3,138.03x = 7,850,030.28
  5. Step 5: Solve for x
    x = 7,850,030.28/3,138.03
  6. Step 6: Final answer
    x = 2,501.58

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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.