Home / 2,438.81-3,365.57-1,319.76

Finding the Fourth Proportional to 2,438.81, 3,365.57 and 1,319.76

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Solution

The fourth proportional to 2,438.81, 3,365.57 and 1,319.76 is: 1,821.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,438.81 : 3,365.57 = 1,319.76 : x
  2. Step 2: Convert to fraction form
    2,438.81/3,365.57 = 1,319.76/x
  3. Step 3: Cross multiply
    2,438.81x = 3,365.57 × 1,319.76
  4. Step 4: Simplify right side
    2,438.81x = 4,441,753.72
  5. Step 5: Solve for x
    x = 4,441,753.72/2,438.81
  6. Step 6: Final answer
    x = 1,821.28

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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.