Home / 3,620.10-5,427.45-1,538.40

Finding the Fourth Proportional to 3,620.10, 5,427.45 and 1,538.40

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Solution

The fourth proportional to 3,620.10, 5,427.45 and 1,538.40 is: 2,306.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,620.10 : 5,427.45 = 1,538.40 : x
  2. Step 2: Convert to fraction form
    3,620.10/5,427.45 = 1,538.40/x
  3. Step 3: Cross multiply
    3,620.10x = 5,427.45 × 1,538.40
  4. Step 4: Simplify right side
    3,620.10x = 8,349,589.08
  5. Step 5: Solve for x
    x = 8,349,589.08/3,620.10
  6. Step 6: Final answer
    x = 2,306.45

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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.