Home / 2,331.90-3,218.56-1,337.74

Finding the Fourth Proportional to 2,331.90, 3,218.56 and 1,337.74

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Solution

The fourth proportional to 2,331.90, 3,218.56 and 1,337.74 is: 1,846.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,331.90 : 3,218.56 = 1,337.74 : x
  2. Step 2: Convert to fraction form
    2,331.90/3,218.56 = 1,337.74/x
  3. Step 3: Cross multiply
    2,331.90x = 3,218.56 × 1,337.74
  4. Step 4: Simplify right side
    2,331.90x = 4,305,596.45
  5. Step 5: Solve for x
    x = 4,305,596.45/2,331.90
  6. Step 6: Final answer
    x = 1,846.39

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Double scale
Find fourth proportional to 2,332.90, 3,219.94 and 1,338.74
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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.