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Finding the Fourth Proportional to 5,318.42, 7,978.86 and 2,395.13

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Solution

The fourth proportional to 5,318.42, 7,978.86 and 2,395.13 is: 3,593.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,318.42 : 7,978.86 = 2,395.13 : x
  2. Step 2: Convert to fraction form
    5,318.42/7,978.86 = 2,395.13/x
  3. Step 3: Cross multiply
    5,318.42x = 7,978.86 × 2,395.13
  4. Step 4: Simplify right side
    5,318.42x = 19,110,367.06
  5. Step 5: Solve for x
    x = 19,110,367.06/5,318.42
  6. Step 6: Final answer
    x = 3,593.24

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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.