Home / 6,138.21-8,471.61-3,485.07

Finding the Fourth Proportional to 6,138.21, 8,471.61 and 3,485.07

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Solution

The fourth proportional to 6,138.21, 8,471.61 and 3,485.07 is: 4,809.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,138.21 : 8,471.61 = 3,485.07 : x
  2. Step 2: Convert to fraction form
    6,138.21/8,471.61 = 3,485.07/x
  3. Step 3: Cross multiply
    6,138.21x = 8,471.61 × 3,485.07
  4. Step 4: Simplify right side
    6,138.21x = 29,524,153.86
  5. Step 5: Solve for x
    x = 29,524,153.86/6,138.21
  6. Step 6: Final answer
    x = 4,809.90

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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.