Home / 3,131.08-4,695.78-1,281.64

Finding the Fourth Proportional to 3,131.08, 4,695.78 and 1,281.64

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Solution

The fourth proportional to 3,131.08, 4,695.78 and 1,281.64 is: 1,922.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,131.08 : 4,695.78 = 1,281.64 : x
  2. Step 2: Convert to fraction form
    3,131.08/4,695.78 = 1,281.64/x
  3. Step 3: Cross multiply
    3,131.08x = 4,695.78 × 1,281.64
  4. Step 4: Simplify right side
    3,131.08x = 6,018,299.48
  5. Step 5: Solve for x
    x = 6,018,299.48/3,131.08
  6. Step 6: Final answer
    x = 1,922.12

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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.