Home / 3,326.40-4,987.80-1,376.40

Finding the Fourth Proportional to 3,326.40, 4,987.80 and 1,376.40

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Solution

The fourth proportional to 3,326.40, 4,987.80 and 1,376.40 is: 2,063.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.40 : 4,987.80 = 1,376.40 : x
  2. Step 2: Convert to fraction form
    3,326.40/4,987.80 = 1,376.40/x
  3. Step 3: Cross multiply
    3,326.40x = 4,987.80 × 1,376.40
  4. Step 4: Simplify right side
    3,326.40x = 6,865,207.92
  5. Step 5: Solve for x
    x = 6,865,207.92/3,326.40
  6. Step 6: Final answer
    x = 2,063.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.