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Finding the Fourth Proportional to 6,615.68, 9,845.44 and 6,399.68

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Solution

The fourth proportional to 6,615.68, 9,845.44 and 6,399.68 is: 9,523.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.68 : 9,845.44 = 6,399.68 : x
  2. Step 2: Convert to fraction form
    6,615.68/9,845.44 = 6,399.68/x
  3. Step 3: Cross multiply
    6,615.68x = 9,845.44 × 6,399.68
  4. Step 4: Simplify right side
    6,615.68x = 63,007,665.46
  5. Step 5: Solve for x
    x = 63,007,665.46/6,615.68
  6. Step 6: Final answer
    x = 9,523.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.