Home / 6,916.60-10,366.70-3,988.86

Finding the Fourth Proportional to 6,916.60, 10,366.70 and 3,988.86

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Solution

The fourth proportional to 6,916.60, 10,366.70 and 3,988.86 is: 5,978.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,916.60 : 10,366.70 = 3,988.86 : x
  2. Step 2: Convert to fraction form
    6,916.60/10,366.70 = 3,988.86/x
  3. Step 3: Cross multiply
    6,916.60x = 10,366.70 × 3,988.86
  4. Step 4: Simplify right side
    6,916.60x = 41,351,314.96
  5. Step 5: Solve for x
    x = 41,351,314.96/6,916.60
  6. Step 6: Final answer
    x = 5,978.56

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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.