Home / 2,863.05-3,951.38-1,684.23

Finding the Fourth Proportional to 2,863.05, 3,951.38 and 1,684.23

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Solution

The fourth proportional to 2,863.05, 3,951.38 and 1,684.23 is: 2,324.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,863.05 : 3,951.38 = 1,684.23 : x
  2. Step 2: Convert to fraction form
    2,863.05/3,951.38 = 1,684.23/x
  3. Step 3: Cross multiply
    2,863.05x = 3,951.38 × 1,684.23
  4. Step 4: Simplify right side
    2,863.05x = 6,655,024.32
  5. Step 5: Solve for x
    x = 6,655,024.32/2,863.05
  6. Step 6: Final answer
    x = 2,324.45

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Half scale
Find fourth proportional to 5,726.10, 7,902.75 and 3,368.46
Double scale
Find fourth proportional to 2,864.05, 3,952.76 and 1,685.23
Similar ratio
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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.