Home / 5,172.66-7,141.90-4,039.61

Finding the Fourth Proportional to 5,172.66, 7,141.90 and 4,039.61

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Solution

The fourth proportional to 5,172.66, 7,141.90 and 4,039.61 is: 5,577.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,172.66 : 7,141.90 = 4,039.61 : x
  2. Step 2: Convert to fraction form
    5,172.66/7,141.90 = 4,039.61/x
  3. Step 3: Cross multiply
    5,172.66x = 7,141.90 × 4,039.61
  4. Step 4: Simplify right side
    5,172.66x = 28,850,480.96
  5. Step 5: Solve for x
    x = 28,850,480.96/5,172.66
  6. Step 6: Final answer
    x = 5,577.50

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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.