Home / 3,620.34-5,430.30-1,398.74

Finding the Fourth Proportional to 3,620.34, 5,430.30 and 1,398.74

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Solution

The fourth proportional to 3,620.34, 5,430.30 and 1,398.74 is: 2,098.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.34 : 5,430.30 = 1,398.74 : x
  2. Step 2: Convert to fraction form
    3,620.34/5,430.30 = 1,398.74/x
  3. Step 3: Cross multiply
    3,620.34x = 5,430.30 × 1,398.74
  4. Step 4: Simplify right side
    3,620.34x = 7,595,577.82
  5. Step 5: Solve for x
    x = 7,595,577.82/3,620.34
  6. Step 6: Final answer
    x = 2,098.03

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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.