Home / 3,798.78-5,242.53-2,680.08

Finding the Fourth Proportional to 3,798.78, 5,242.53 and 2,680.08

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Solution

The fourth proportional to 3,798.78, 5,242.53 and 2,680.08 is: 3,698.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.78 : 5,242.53 = 2,680.08 : x
  2. Step 2: Convert to fraction form
    3,798.78/5,242.53 = 2,680.08/x
  3. Step 3: Cross multiply
    3,798.78x = 5,242.53 × 2,680.08
  4. Step 4: Simplify right side
    3,798.78x = 14,050,399.80
  5. Step 5: Solve for x
    x = 14,050,399.80/3,798.78
  6. Step 6: Final answer
    x = 3,698.66

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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.