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Finding the Fourth Proportional to 6,754.85, 9,320.77 and 3,921.77

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Solution

The fourth proportional to 6,754.85, 9,320.77 and 3,921.77 is: 5,411.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,754.85 : 9,320.77 = 3,921.77 : x
  2. Step 2: Convert to fraction form
    6,754.85/9,320.77 = 3,921.77/x
  3. Step 3: Cross multiply
    6,754.85x = 9,320.77 × 3,921.77
  4. Step 4: Simplify right side
    6,754.85x = 36,553,922.31
  5. Step 5: Solve for x
    x = 36,553,922.31/6,754.85
  6. Step 6: Final answer
    x = 5,411.51

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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.