Home / 3,619.34-5,428.80-1,397.74

Finding the Fourth Proportional to 3,619.34, 5,428.80 and 1,397.74

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Solution

The fourth proportional to 3,619.34, 5,428.80 and 1,397.74 is: 2,096.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,619.34 : 5,428.80 = 1,397.74 : x
  2. Step 2: Convert to fraction form
    3,619.34/5,428.80 = 1,397.74/x
  3. Step 3: Cross multiply
    3,619.34x = 5,428.80 × 1,397.74
  4. Step 4: Simplify right side
    3,619.34x = 7,588,062.94
  5. Step 5: Solve for x
    x = 7,588,062.94/3,619.34
  6. Step 6: Final answer
    x = 2,096.53

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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.