Home / 1,836.30-2,754.60-520.07

Finding the Fourth Proportional to 1,836.30, 2,754.60 and 520.07

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Solution

The fourth proportional to 1,836.30, 2,754.60 and 520.07 is: 780.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,836.30 : 2,754.60 = 520.07 : x
  2. Step 2: Convert to fraction form
    1,836.30/2,754.60 = 520.07/x
  3. Step 3: Cross multiply
    1,836.30x = 2,754.60 × 520.07
  4. Step 4: Simplify right side
    1,836.30x = 1,432,571.05
  5. Step 5: Solve for x
    x = 1,432,571.05/1,836.30
  6. Step 6: Final answer
    x = 780.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.