Home / 6,520.34-8,999.36-3,687.72

Finding the Fourth Proportional to 6,520.34, 8,999.36 and 3,687.72

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Solution

The fourth proportional to 6,520.34, 8,999.36 and 3,687.72 is: 5,089.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,520.34 : 8,999.36 = 3,687.72 : x
  2. Step 2: Convert to fraction form
    6,520.34/8,999.36 = 3,687.72/x
  3. Step 3: Cross multiply
    6,520.34x = 8,999.36 × 3,687.72
  4. Step 4: Simplify right side
    6,520.34x = 33,187,119.86
  5. Step 5: Solve for x
    x = 33,187,119.86/6,520.34
  6. Step 6: Final answer
    x = 5,089.78

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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.