Home / 3,778.16-5,665.16-1,405.04

Finding the Fourth Proportional to 3,778.16, 5,665.16 and 1,405.04

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Solution

The fourth proportional to 3,778.16, 5,665.16 and 1,405.04 is: 2,106.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,778.16 : 5,665.16 = 1,405.04 : x
  2. Step 2: Convert to fraction form
    3,778.16/5,665.16 = 1,405.04/x
  3. Step 3: Cross multiply
    3,778.16x = 5,665.16 × 1,405.04
  4. Step 4: Simplify right side
    3,778.16x = 7,959,776.41
  5. Step 5: Solve for x
    x = 7,959,776.41/3,778.16
  6. Step 6: Final answer
    x = 2,106.79

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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.