Home / 5,709.20-8,565.30-1,813.60

Finding the Fourth Proportional to 5,709.20, 8,565.30 and 1,813.60

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Solution

The fourth proportional to 5,709.20, 8,565.30 and 1,813.60 is: 2,720.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,709.20 : 8,565.30 = 1,813.60 : x
  2. Step 2: Convert to fraction form
    5,709.20/8,565.30 = 1,813.60/x
  3. Step 3: Cross multiply
    5,709.20x = 8,565.30 × 1,813.60
  4. Step 4: Simplify right side
    5,709.20x = 15,534,028.08
  5. Step 5: Solve for x
    x = 15,534,028.08/5,709.20
  6. Step 6: Final answer
    x = 2,720.88

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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.