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Finding the Fourth Proportional to 7,809.75, 10,764.33 and 5,920.73

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Solution

The fourth proportional to 7,809.75, 10,764.33 and 5,920.73 is: 8,160.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.75 : 10,764.33 = 5,920.73 : x
  2. Step 2: Convert to fraction form
    7,809.75/10,764.33 = 5,920.73/x
  3. Step 3: Cross multiply
    7,809.75x = 10,764.33 × 5,920.73
  4. Step 4: Simplify right side
    7,809.75x = 63,732,655.90
  5. Step 5: Solve for x
    x = 63,732,655.90/7,809.75
  6. Step 6: Final answer
    x = 8,160.65

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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.