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Finding the Fourth Proportional to 5,318.95, 7,978.43 and 2,393.84

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Solution

The fourth proportional to 5,318.95, 7,978.43 and 2,393.84 is: 3,590.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.95 : 7,978.43 = 2,393.84 : x
  2. Step 2: Convert to fraction form
    5,318.95/7,978.43 = 2,393.84/x
  3. Step 3: Cross multiply
    5,318.95x = 7,978.43 × 2,393.84
  4. Step 4: Simplify right side
    5,318.95x = 19,099,084.87
  5. Step 5: Solve for x
    x = 19,099,084.87/5,318.95
  6. Step 6: Final answer
    x = 3,590.76

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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.