Home / 1,679.24-2,316.71-1,238.19

Finding the Fourth Proportional to 1,679.24, 2,316.71 and 1,238.19

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Solution

The fourth proportional to 1,679.24, 2,316.71 and 1,238.19 is: 1,708.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,679.24 : 2,316.71 = 1,238.19 : x
  2. Step 2: Convert to fraction form
    1,679.24/2,316.71 = 1,238.19/x
  3. Step 3: Cross multiply
    1,679.24x = 2,316.71 × 1,238.19
  4. Step 4: Simplify right side
    1,679.24x = 2,868,520.96
  5. Step 5: Solve for x
    x = 2,868,520.96/1,679.24
  6. Step 6: Final answer
    x = 1,708.23

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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.