Home / 5,247.93-7,873.65-2,128.62

Finding the Fourth Proportional to 5,247.93, 7,873.65 and 2,128.62

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Solution

The fourth proportional to 5,247.93, 7,873.65 and 2,128.62 is: 3,193.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,247.93 : 7,873.65 = 2,128.62 : x
  2. Step 2: Convert to fraction form
    5,247.93/7,873.65 = 2,128.62/x
  3. Step 3: Cross multiply
    5,247.93x = 7,873.65 × 2,128.62
  4. Step 4: Simplify right side
    5,247.93x = 16,760,008.86
  5. Step 5: Solve for x
    x = 16,760,008.86/5,247.93
  6. Step 6: Final answer
    x = 3,193.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.