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Finding the Fourth Proportional to 789.84, 1,192.14 and 789.84

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Solution

The fourth proportional to 789.84, 1,192.14 and 789.84 is: 1,192.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    789.84 : 1,192.14 = 789.84 : x
  2. Step 2: Convert to fraction form
    789.84/1,192.14 = 789.84/x
  3. Step 3: Cross multiply
    789.84x = 1,192.14 × 789.84
  4. Step 4: Simplify right side
    789.84x = 941,599.86
  5. Step 5: Solve for x
    x = 941,599.86/789.84
  6. Step 6: Final answer
    x = 1,192.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.