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Finding the Fourth Proportional to 5,918.19, 8,838.91 and 5,361.78

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Solution

The fourth proportional to 5,918.19, 8,838.91 and 5,361.78 is: 8,007.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,918.19 : 8,838.91 = 5,361.78 : x
  2. Step 2: Convert to fraction form
    5,918.19/8,838.91 = 5,361.78/x
  3. Step 3: Cross multiply
    5,918.19x = 8,838.91 × 5,361.78
  4. Step 4: Simplify right side
    5,918.19x = 47,392,290.86
  5. Step 5: Solve for x
    x = 47,392,290.86/5,918.19
  6. Step 6: Final answer
    x = 8,007.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.