Home / 7,120.37-10,682.84-3,422.87

Finding the Fourth Proportional to 7,120.37, 10,682.84 and 3,422.87

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Solution

The fourth proportional to 7,120.37, 10,682.84 and 3,422.87 is: 5,135.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,120.37 : 10,682.84 = 3,422.87 : x
  2. Step 2: Convert to fraction form
    7,120.37/10,682.84 = 3,422.87/x
  3. Step 3: Cross multiply
    7,120.37x = 10,682.84 × 3,422.87
  4. Step 4: Simplify right side
    7,120.37x = 36,565,972.55
  5. Step 5: Solve for x
    x = 36,565,972.55/7,120.37
  6. Step 6: Final answer
    x = 5,135.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.