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Finding the Fourth Proportional to 6,812.52, 10,218.78 and 4,615.80

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Solution

The fourth proportional to 6,812.52, 10,218.78 and 4,615.80 is: 6,923.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,812.52 : 10,218.78 = 4,615.80 : x
  2. Step 2: Convert to fraction form
    6,812.52/10,218.78 = 4,615.80/x
  3. Step 3: Cross multiply
    6,812.52x = 10,218.78 × 4,615.80
  4. Step 4: Simplify right side
    6,812.52x = 47,167,844.72
  5. Step 5: Solve for x
    x = 47,167,844.72/6,812.52
  6. Step 6: Final answer
    x = 6,923.70

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1.5x scale

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.