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Finding the Fourth Proportional to 6,747.63, 9,312.54 and 3,953.13

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Solution

The fourth proportional to 6,747.63, 9,312.54 and 3,953.13 is: 5,455.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,747.63 : 9,312.54 = 3,953.13 : x
  2. Step 2: Convert to fraction form
    6,747.63/9,312.54 = 3,953.13/x
  3. Step 3: Cross multiply
    6,747.63x = 9,312.54 × 3,953.13
  4. Step 4: Simplify right side
    6,747.63x = 36,813,614.92
  5. Step 5: Solve for x
    x = 36,813,614.92/6,747.63
  6. Step 6: Final answer
    x = 5,455.79

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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.