Home / 1,246.38-1,720.17-1,208.13

Finding the Fourth Proportional to 1,246.38, 1,720.17 and 1,208.13

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Solution

The fourth proportional to 1,246.38, 1,720.17 and 1,208.13 is: 1,667.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.38 : 1,720.17 = 1,208.13 : x
  2. Step 2: Convert to fraction form
    1,246.38/1,720.17 = 1,208.13/x
  3. Step 3: Cross multiply
    1,246.38x = 1,720.17 × 1,208.13
  4. Step 4: Simplify right side
    1,246.38x = 2,078,188.98
  5. Step 5: Solve for x
    x = 2,078,188.98/1,246.38
  6. Step 6: Final answer
    x = 1,667.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.