Home / 2,439.39-3,364.16-2,180.19

Finding the Fourth Proportional to 2,439.39, 3,364.16 and 2,180.19

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Solution

The fourth proportional to 2,439.39, 3,364.16 and 2,180.19 is: 3,006.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.39 : 3,364.16 = 2,180.19 : x
  2. Step 2: Convert to fraction form
    2,439.39/3,364.16 = 2,180.19/x
  3. Step 3: Cross multiply
    2,439.39x = 3,364.16 × 2,180.19
  4. Step 4: Simplify right side
    2,439.39x = 7,334,497.09
  5. Step 5: Solve for x
    x = 7,334,497.09/2,439.39
  6. Step 6: Final answer
    x = 3,006.69

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Half scale
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Double scale
Find fourth proportional to 2,440.39, 3,365.53 and 2,181.19
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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.