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Finding the Fourth Proportional to 6,310.95, 8,717.95 and 5,978.81

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Solution

The fourth proportional to 6,310.95, 8,717.95 and 5,978.81 is: 8,259.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,310.95 : 8,717.95 = 5,978.81 : x
  2. Step 2: Convert to fraction form
    6,310.95/8,717.95 = 5,978.81/x
  3. Step 3: Cross multiply
    6,310.95x = 8,717.95 × 5,978.81
  4. Step 4: Simplify right side
    6,310.95x = 52,122,923.05
  5. Step 5: Solve for x
    x = 52,122,923.05/6,310.95
  6. Step 6: Final answer
    x = 8,259.12

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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.