Home / 3,087.87-4,261.34-1,761.72

Finding the Fourth Proportional to 3,087.87, 4,261.34 and 1,761.72

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Solution

The fourth proportional to 3,087.87, 4,261.34 and 1,761.72 is: 2,431.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.87 : 4,261.34 = 1,761.72 : x
  2. Step 2: Convert to fraction form
    3,087.87/4,261.34 = 1,761.72/x
  3. Step 3: Cross multiply
    3,087.87x = 4,261.34 × 1,761.72
  4. Step 4: Simplify right side
    3,087.87x = 7,507,279.10
  5. Step 5: Solve for x
    x = 7,507,279.10/3,087.87
  6. Step 6: Final answer
    x = 2,431.22

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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.