Home / 3,108.90-4,290.75-2,361.63

Finding the Fourth Proportional to 3,108.90, 4,290.75 and 2,361.63

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Solution

The fourth proportional to 3,108.90, 4,290.75 and 2,361.63 is: 3,259.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,108.90 : 4,290.75 = 2,361.63 : x
  2. Step 2: Convert to fraction form
    3,108.90/4,290.75 = 2,361.63/x
  3. Step 3: Cross multiply
    3,108.90x = 4,290.75 × 2,361.63
  4. Step 4: Simplify right side
    3,108.90x = 10,133,163.92
  5. Step 5: Solve for x
    x = 10,133,163.92/3,108.90
  6. Step 6: Final answer
    x = 3,259.40

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Half scale
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Double scale
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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.