Home / 3,913.12-5,869.76-1,603.20

Finding the Fourth Proportional to 3,913.12, 5,869.76 and 1,603.20

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Solution

The fourth proportional to 3,913.12, 5,869.76 and 1,603.20 is: 2,404.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,913.12 : 5,869.76 = 1,603.20 : x
  2. Step 2: Convert to fraction form
    3,913.12/5,869.76 = 1,603.20/x
  3. Step 3: Cross multiply
    3,913.12x = 5,869.76 × 1,603.20
  4. Step 4: Simplify right side
    3,913.12x = 9,410,399.23
  5. Step 5: Solve for x
    x = 9,410,399.23/3,913.12
  6. Step 6: Final answer
    x = 2,404.83

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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.