Home / 3,798.40-5,242.08-2,119.88

Finding the Fourth Proportional to 3,798.40, 5,242.08 and 2,119.88

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Solution

The fourth proportional to 3,798.40, 5,242.08 and 2,119.88 is: 2,925.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,798.40 : 5,242.08 = 2,119.88 : x
  2. Step 2: Convert to fraction form
    3,798.40/5,242.08 = 2,119.88/x
  3. Step 3: Cross multiply
    3,798.40x = 5,242.08 × 2,119.88
  4. Step 4: Simplify right side
    3,798.40x = 11,112,543.74
  5. Step 5: Solve for x
    x = 11,112,543.74/3,798.40
  6. Step 6: Final answer
    x = 2,925.59

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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.