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Finding the Fourth Proportional to 3,392.84, 5,089.42 and 927.61

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Solution

The fourth proportional to 3,392.84, 5,089.42 and 927.61 is: 1,391.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,392.84 : 5,089.42 = 927.61 : x
  2. Step 2: Convert to fraction form
    3,392.84/5,089.42 = 927.61/x
  3. Step 3: Cross multiply
    3,392.84x = 5,089.42 × 927.61
  4. Step 4: Simplify right side
    3,392.84x = 4,720,980.10
  5. Step 5: Solve for x
    x = 4,720,980.10/3,392.84
  6. Step 6: Final answer
    x = 1,391.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.