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Finding the Fourth Proportional to 6,440.57, 8,891.94 and 4,945.58

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Solution

The fourth proportional to 6,440.57, 8,891.94 and 4,945.58 is: 6,827.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,440.57 : 8,891.94 = 4,945.58 : x
  2. Step 2: Convert to fraction form
    6,440.57/8,891.94 = 4,945.58/x
  3. Step 3: Cross multiply
    6,440.57x = 8,891.94 × 4,945.58
  4. Step 4: Simplify right side
    6,440.57x = 43,975,800.63
  5. Step 5: Solve for x
    x = 43,975,800.63/6,440.57
  6. Step 6: Final answer
    x = 6,827.94

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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.