Home / 1,353.25-2,029.55-520.14

Finding the Fourth Proportional to 1,353.25, 2,029.55 and 520.14

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Solution

The fourth proportional to 1,353.25, 2,029.55 and 520.14 is: 780.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353.25 : 2,029.55 = 520.14 : x
  2. Step 2: Convert to fraction form
    1,353.25/2,029.55 = 520.14/x
  3. Step 3: Cross multiply
    1,353.25x = 2,029.55 × 520.14
  4. Step 4: Simplify right side
    1,353.25x = 1,055,655.15
  5. Step 5: Solve for x
    x = 1,055,655.15/1,353.25
  6. Step 6: Final answer
    x = 780.09

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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.