Home / 3,798.61-5,242.35-2,120.35

Finding the Fourth Proportional to 3,798.61, 5,242.35 and 2,120.35

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Solution

The fourth proportional to 3,798.61, 5,242.35 and 2,120.35 is: 2,926.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.61 : 5,242.35 = 2,120.35 : x
  2. Step 2: Convert to fraction form
    3,798.61/5,242.35 = 2,120.35/x
  3. Step 3: Cross multiply
    3,798.61x = 5,242.35 × 2,120.35
  4. Step 4: Simplify right side
    3,798.61x = 11,115,598.42
  5. Step 5: Solve for x
    x = 11,115,598.42/3,798.61
  6. Step 6: Final answer
    x = 2,926.23

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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.