Home / 3,087.90-4,260.96-1,908.72

Finding the Fourth Proportional to 3,087.90, 4,260.96 and 1,908.72

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Solution

The fourth proportional to 3,087.90, 4,260.96 and 1,908.72 is: 2,633.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.90 : 4,260.96 = 1,908.72 : x
  2. Step 2: Convert to fraction form
    3,087.90/4,260.96 = 1,908.72/x
  3. Step 3: Cross multiply
    3,087.90x = 4,260.96 × 1,908.72
  4. Step 4: Simplify right side
    3,087.90x = 8,132,979.57
  5. Step 5: Solve for x
    x = 8,132,979.57/3,087.90
  6. Step 6: Final answer
    x = 2,633.82

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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.