Home / 1,720.08-2,577.60-769.09

Finding the Fourth Proportional to 1,720.08, 2,577.60 and 769.09

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Solution

The fourth proportional to 1,720.08, 2,577.60 and 769.09 is: 1,152.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.08 : 2,577.60 = 769.09 : x
  2. Step 2: Convert to fraction form
    1,720.08/2,577.60 = 769.09/x
  3. Step 3: Cross multiply
    1,720.08x = 2,577.60 × 769.09
  4. Step 4: Simplify right side
    1,720.08x = 1,982,406.41
  5. Step 5: Solve for x
    x = 1,982,406.41/1,720.08
  6. Step 6: Final answer
    x = 1,152.51

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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.