Home / 1,709.23-2,563.88-669.19

Finding the Fourth Proportional to 1,709.23, 2,563.88 and 669.19

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Solution

The fourth proportional to 1,709.23, 2,563.88 and 669.19 is: 1,003.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,709.23 : 2,563.88 = 669.19 : x
  2. Step 2: Convert to fraction form
    1,709.23/2,563.88 = 669.19/x
  3. Step 3: Cross multiply
    1,709.23x = 2,563.88 × 669.19
  4. Step 4: Simplify right side
    1,709.23x = 1,715,722.86
  5. Step 5: Solve for x
    x = 1,715,722.86/1,709.23
  6. Step 6: Final answer
    x = 1,003.80

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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.