Home / 3,111.15-4,293.23-1,932.20

Finding the Fourth Proportional to 3,111.15, 4,293.23 and 1,932.20

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Solution

The fourth proportional to 3,111.15, 4,293.23 and 1,932.20 is: 2,666.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.15 : 4,293.23 = 1,932.20 : x
  2. Step 2: Convert to fraction form
    3,111.15/4,293.23 = 1,932.20/x
  3. Step 3: Cross multiply
    3,111.15x = 4,293.23 × 1,932.20
  4. Step 4: Simplify right side
    3,111.15x = 8,295,347.88
  5. Step 5: Solve for x
    x = 8,295,347.88/3,111.15
  6. Step 6: Final answer
    x = 2,666.33

Related Problems

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Half scale
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Double scale
Find fourth proportional to 3,112.15, 4,294.60 and 1,933.20
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.