Home / 3,114.30-4,291.98-2,640.68

Finding the Fourth Proportional to 3,114.30, 4,291.98 and 2,640.68

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Solution

The fourth proportional to 3,114.30, 4,291.98 and 2,640.68 is: 3,639.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,114.30 : 4,291.98 = 2,640.68 : x
  2. Step 2: Convert to fraction form
    3,114.30/4,291.98 = 2,640.68/x
  3. Step 3: Cross multiply
    3,114.30x = 4,291.98 × 2,640.68
  4. Step 4: Simplify right side
    3,114.30x = 11,333,745.75
  5. Step 5: Solve for x
    x = 11,333,745.75/3,114.30
  6. Step 6: Final answer
    x = 3,639.26

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1.5x scale

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.