Home / 3,811.20-5,257.81-2,693.10

Finding the Fourth Proportional to 3,811.20, 5,257.81 and 2,693.10

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Solution

The fourth proportional to 3,811.20, 5,257.81 and 2,693.10 is: 3,715.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,811.20 : 5,257.81 = 2,693.10 : x
  2. Step 2: Convert to fraction form
    3,811.20/5,257.81 = 2,693.10/x
  3. Step 3: Cross multiply
    3,811.20x = 5,257.81 × 2,693.10
  4. Step 4: Simplify right side
    3,811.20x = 14,159,801.62
  5. Step 5: Solve for x
    x = 14,159,801.62/3,811.20
  6. Step 6: Final answer
    x = 3,715.31

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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.