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Finding the Fourth Proportional to 6,763.52, 9,332.06 and 3,929.21

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Solution

The fourth proportional to 6,763.52, 9,332.06 and 3,929.21 is: 5,421.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,763.52 : 9,332.06 = 3,929.21 : x
  2. Step 2: Convert to fraction form
    6,763.52/9,332.06 = 3,929.21/x
  3. Step 3: Cross multiply
    6,763.52x = 9,332.06 × 3,929.21
  4. Step 4: Simplify right side
    6,763.52x = 36,667,623.47
  5. Step 5: Solve for x
    x = 36,667,623.47/6,763.52
  6. Step 6: Final answer
    x = 5,421.38

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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.