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Finding the Fourth Proportional to 5,348.94, 7,380.93 and 2,990.66

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Solution

The fourth proportional to 5,348.94, 7,380.93 and 2,990.66 is: 4,126.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,348.94 : 7,380.93 = 2,990.66 : x
  2. Step 2: Convert to fraction form
    5,348.94/7,380.93 = 2,990.66/x
  3. Step 3: Cross multiply
    5,348.94x = 7,380.93 × 2,990.66
  4. Step 4: Simplify right side
    5,348.94x = 22,073,852.11
  5. Step 5: Solve for x
    x = 22,073,852.11/5,348.94
  6. Step 6: Final answer
    x = 4,126.77

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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.