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Finding the Fourth Proportional to 2,500.13, 3,450.13 and 1,381.07

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Solution

The fourth proportional to 2,500.13, 3,450.13 and 1,381.07 is: 1,905.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,500.13 : 3,450.13 = 1,381.07 : x
  2. Step 2: Convert to fraction form
    2,500.13/3,450.13 = 1,381.07/x
  3. Step 3: Cross multiply
    2,500.13x = 3,450.13 × 1,381.07
  4. Step 4: Simplify right side
    2,500.13x = 4,764,850.34
  5. Step 5: Solve for x
    x = 4,764,850.34/2,500.13
  6. Step 6: Final answer
    x = 1,905.84

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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.