Home / 3,115.11-4,303.61-2,647.98

Finding the Fourth Proportional to 3,115.11, 4,303.61 and 2,647.98

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Solution

The fourth proportional to 3,115.11, 4,303.61 and 2,647.98 is: 3,658.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.11 : 4,303.61 = 2,647.98 : x
  2. Step 2: Convert to fraction form
    3,115.11/4,303.61 = 2,647.98/x
  3. Step 3: Cross multiply
    3,115.11x = 4,303.61 × 2,647.98
  4. Step 4: Simplify right side
    3,115.11x = 11,395,856.40
  5. Step 5: Solve for x
    x = 11,395,856.40/3,115.11
  6. Step 6: Final answer
    x = 3,658.25

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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.