Home / 3,138.48-4,331.13-1,812.41

Finding the Fourth Proportional to 3,138.48, 4,331.13 and 1,812.41

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Solution

The fourth proportional to 3,138.48, 4,331.13 and 1,812.41 is: 2,501.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.48 : 4,331.13 = 1,812.41 : x
  2. Step 2: Convert to fraction form
    3,138.48/4,331.13 = 1,812.41/x
  3. Step 3: Cross multiply
    3,138.48x = 4,331.13 × 1,812.41
  4. Step 4: Simplify right side
    3,138.48x = 7,849,783.32
  5. Step 5: Solve for x
    x = 7,849,783.32/3,138.48
  6. Step 6: Final answer
    x = 2,501.14

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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.