Home / 6,521.67-8,999.85-3,689.60

Finding the Fourth Proportional to 6,521.67, 8,999.85 and 3,689.60

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Solution

The fourth proportional to 6,521.67, 8,999.85 and 3,689.60 is: 5,091.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,521.67 : 8,999.85 = 3,689.60 : x
  2. Step 2: Convert to fraction form
    6,521.67/8,999.85 = 3,689.60/x
  3. Step 3: Cross multiply
    6,521.67x = 8,999.85 × 3,689.60
  4. Step 4: Simplify right side
    6,521.67x = 33,205,801.56
  5. Step 5: Solve for x
    x = 33,205,801.56/6,521.67
  6. Step 6: Final answer
    x = 5,091.61

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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.