Home / 3,111.40-4,293.57-1,932.45

Finding the Fourth Proportional to 3,111.40, 4,293.57 and 1,932.45

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Solution

The fourth proportional to 3,111.40, 4,293.57 and 1,932.45 is: 2,666.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,111.40 : 4,293.57 = 1,932.45 : x
  2. Step 2: Convert to fraction form
    3,111.40/4,293.57 = 1,932.45/x
  3. Step 3: Cross multiply
    3,111.40x = 4,293.57 × 1,932.45
  4. Step 4: Simplify right side
    3,111.40x = 8,297,109.35
  5. Step 5: Solve for x
    x = 8,297,109.35/3,111.40
  6. Step 6: Final answer
    x = 2,666.68

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Double scale
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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.