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Finding the Fourth Proportional to 6,215.76, 8,573.40 and 4,222.87

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Solution

The fourth proportional to 6,215.76, 8,573.40 and 4,222.87 is: 5,824.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,215.76 : 8,573.40 = 4,222.87 : x
  2. Step 2: Convert to fraction form
    6,215.76/8,573.40 = 4,222.87/x
  3. Step 3: Cross multiply
    6,215.76x = 8,573.40 × 4,222.87
  4. Step 4: Simplify right side
    6,215.76x = 36,204,332.22
  5. Step 5: Solve for x
    x = 36,204,332.22/6,215.76
  6. Step 6: Final answer
    x = 5,824.60

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.