Home / 3,842.40-5,762.08-1,377.28

Finding the Fourth Proportional to 3,842.40, 5,762.08 and 1,377.28

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Solution

The fourth proportional to 3,842.40, 5,762.08 and 1,377.28 is: 2,065.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,842.40 : 5,762.08 = 1,377.28 : x
  2. Step 2: Convert to fraction form
    3,842.40/5,762.08 = 1,377.28/x
  3. Step 3: Cross multiply
    3,842.40x = 5,762.08 × 1,377.28
  4. Step 4: Simplify right side
    3,842.40x = 7,935,997.54
  5. Step 5: Solve for x
    x = 7,935,997.54/3,842.40
  6. Step 6: Final answer
    x = 2,065.38

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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.