Home / 6,872.45-9,483.98-3,728.61

Finding the Fourth Proportional to 6,872.45, 9,483.98 and 3,728.61

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Solution

The fourth proportional to 6,872.45, 9,483.98 and 3,728.61 is: 5,145.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,872.45 : 9,483.98 = 3,728.61 : x
  2. Step 2: Convert to fraction form
    6,872.45/9,483.98 = 3,728.61/x
  3. Step 3: Cross multiply
    6,872.45x = 9,483.98 × 3,728.61
  4. Step 4: Simplify right side
    6,872.45x = 35,362,044.02
  5. Step 5: Solve for x
    x = 35,362,044.02/6,872.45
  6. Step 6: Final answer
    x = 5,145.48

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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.