Home / 5,416.64-8,121.66-2,125.79

Finding the Fourth Proportional to 5,416.64, 8,121.66 and 2,125.79

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Solution

The fourth proportional to 5,416.64, 8,121.66 and 2,125.79 is: 3,187.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.64 : 8,121.66 = 2,125.79 : x
  2. Step 2: Convert to fraction form
    5,416.64/8,121.66 = 2,125.79/x
  3. Step 3: Cross multiply
    5,416.64x = 8,121.66 × 2,125.79
  4. Step 4: Simplify right side
    5,416.64x = 17,264,903.00
  5. Step 5: Solve for x
    x = 17,264,903.00/5,416.64
  6. Step 6: Final answer
    x = 3,187.39

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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.