Home / 1,713.15-2,567.70-1,279.80

Finding the Fourth Proportional to 1,713.15, 2,567.70 and 1,279.80

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Solution

The fourth proportional to 1,713.15, 2,567.70 and 1,279.80 is: 1,918.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,713.15 : 2,567.70 = 1,279.80 : x
  2. Step 2: Convert to fraction form
    1,713.15/2,567.70 = 1,279.80/x
  3. Step 3: Cross multiply
    1,713.15x = 2,567.70 × 1,279.80
  4. Step 4: Simplify right side
    1,713.15x = 3,286,142.46
  5. Step 5: Solve for x
    x = 3,286,142.46/1,713.15
  6. Step 6: Final answer
    x = 1,918.19

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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.