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Finding the Fourth Proportional to 6,697.63, 9,240.81 and 3,864.79

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Solution

The fourth proportional to 6,697.63, 9,240.81 and 3,864.79 is: 5,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,697.63 : 9,240.81 = 3,864.79 : x
  2. Step 2: Convert to fraction form
    6,697.63/9,240.81 = 3,864.79/x
  3. Step 3: Cross multiply
    6,697.63x = 9,240.81 × 3,864.79
  4. Step 4: Simplify right side
    6,697.63x = 35,713,790.08
  5. Step 5: Solve for x
    x = 35,713,790.08/6,697.63
  6. Step 6: Final answer
    x = 5,332.30

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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.