Home / 7,186-9,916.48-3,999.32

Finding the Fourth Proportional to 7,186, 9,916.48 and 3,999.32

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Solution

The fourth proportional to 7,186, 9,916.48 and 3,999.32 is: 5,518.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,186 : 9,916.48 = 3,999.32 : x
  2. Step 2: Convert to fraction form
    7,186/9,916.48 = 3,999.32/x
  3. Step 3: Cross multiply
    7,186x = 9,916.48 × 3,999.32
  4. Step 4: Simplify right side
    7,186x = 39,659,176.79
  5. Step 5: Solve for x
    x = 39,659,176.79/7,186
  6. Step 6: Final answer
    x = 5,518.95

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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.