Home / 1,720.25-2,580.36-1,171.07

Finding the Fourth Proportional to 1,720.25, 2,580.36 and 1,171.07

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Solution

The fourth proportional to 1,720.25, 2,580.36 and 1,171.07 is: 1,756.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.25 : 2,580.36 = 1,171.07 : x
  2. Step 2: Convert to fraction form
    1,720.25/2,580.36 = 1,171.07/x
  3. Step 3: Cross multiply
    1,720.25x = 2,580.36 × 1,171.07
  4. Step 4: Simplify right side
    1,720.25x = 3,021,769.28
  5. Step 5: Solve for x
    x = 3,021,769.28/1,720.25
  6. Step 6: Final answer
    x = 1,756.59

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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.