Home / 3,387.40-4,680.56-2,935.80

Finding the Fourth Proportional to 3,387.40, 4,680.56 and 2,935.80

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Solution

The fourth proportional to 3,387.40, 4,680.56 and 2,935.80 is: 4,056.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,387.40 : 4,680.56 = 2,935.80 : x
  2. Step 2: Convert to fraction form
    3,387.40/4,680.56 = 2,935.80/x
  3. Step 3: Cross multiply
    3,387.40x = 4,680.56 × 2,935.80
  4. Step 4: Simplify right side
    3,387.40x = 13,741,195.39
  5. Step 5: Solve for x
    x = 13,741,195.39/3,387.40
  6. Step 6: Final answer
    x = 4,056.56

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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.