Home / 5,905.80-8,149.46-3,387.40

Finding the Fourth Proportional to 5,905.80, 8,149.46 and 3,387.40

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Solution

The fourth proportional to 5,905.80, 8,149.46 and 3,387.40 is: 4,674.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,905.80 : 8,149.46 = 3,387.40 : x
  2. Step 2: Convert to fraction form
    5,905.80/8,149.46 = 3,387.40/x
  3. Step 3: Cross multiply
    5,905.80x = 8,149.46 × 3,387.40
  4. Step 4: Simplify right side
    5,905.80x = 27,605,480.80
  5. Step 5: Solve for x
    x = 27,605,480.80/5,905.80
  6. Step 6: Final answer
    x = 4,674.30

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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.