Home / 3,319.32-4,980-1,371.66

Finding the Fourth Proportional to 3,319.32, 4,980 and 1,371.66

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Solution

The fourth proportional to 3,319.32, 4,980 and 1,371.66 is: 2,057.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,319.32 : 4,980 = 1,371.66 : x
  2. Step 2: Convert to fraction form
    3,319.32/4,980 = 1,371.66/x
  3. Step 3: Cross multiply
    3,319.32x = 4,980 × 1,371.66
  4. Step 4: Simplify right side
    3,319.32x = 6,830,866.80
  5. Step 5: Solve for x
    x = 6,830,866.80/3,319.32
  6. Step 6: Final answer
    x = 2,057.91

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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.