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Finding the Fourth Proportional to 7,691.90, 10,614.84 and 4,334.76

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Solution

The fourth proportional to 7,691.90, 10,614.84 and 4,334.76 is: 5,981.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.90 : 10,614.84 = 4,334.76 : x
  2. Step 2: Convert to fraction form
    7,691.90/10,614.84 = 4,334.76/x
  3. Step 3: Cross multiply
    7,691.90x = 10,614.84 × 4,334.76
  4. Step 4: Simplify right side
    7,691.90x = 46,012,783.84
  5. Step 5: Solve for x
    x = 46,012,783.84/7,691.90
  6. Step 6: Final answer
    x = 5,981.98

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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.