Home / 3,387.32-4,673.92-1,990.36

Finding the Fourth Proportional to 3,387.32, 4,673.92 and 1,990.36

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Solution

The fourth proportional to 3,387.32, 4,673.92 and 1,990.36 is: 2,746.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.32 : 4,673.92 = 1,990.36 : x
  2. Step 2: Convert to fraction form
    3,387.32/4,673.92 = 1,990.36/x
  3. Step 3: Cross multiply
    3,387.32x = 4,673.92 × 1,990.36
  4. Step 4: Simplify right side
    3,387.32x = 9,302,783.41
  5. Step 5: Solve for x
    x = 9,302,783.41/3,387.32
  6. Step 6: Final answer
    x = 2,746.36

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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.