Home / 6,311.07-8,701.17-5,172.54

Finding the Fourth Proportional to 6,311.07, 8,701.17 and 5,172.54

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Solution

The fourth proportional to 6,311.07, 8,701.17 and 5,172.54 is: 7,131.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,311.07 : 8,701.17 = 5,172.54 : x
  2. Step 2: Convert to fraction form
    6,311.07/8,701.17 = 5,172.54/x
  3. Step 3: Cross multiply
    6,311.07x = 8,701.17 × 5,172.54
  4. Step 4: Simplify right side
    6,311.07x = 45,007,149.87
  5. Step 5: Solve for x
    x = 45,007,149.87/6,311.07
  6. Step 6: Final answer
    x = 7,131.46

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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.