Home / 1,720.14-2,580.30-1,309.92

Finding the Fourth Proportional to 1,720.14, 2,580.30 and 1,309.92

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Solution

The fourth proportional to 1,720.14, 2,580.30 and 1,309.92 is: 1,964.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,720.14 : 2,580.30 = 1,309.92 : x
  2. Step 2: Convert to fraction form
    1,720.14/2,580.30 = 1,309.92/x
  3. Step 3: Cross multiply
    1,720.14x = 2,580.30 × 1,309.92
  4. Step 4: Simplify right side
    1,720.14x = 3,379,986.58
  5. Step 5: Solve for x
    x = 3,379,986.58/1,720.14
  6. Step 6: Final answer
    x = 1,964.95

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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.