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Finding the Fourth Proportional to 6,391.89, 9,590.21 and 2,880.84

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Solution

The fourth proportional to 6,391.89, 9,590.21 and 2,880.84 is: 4,322.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,391.89 : 9,590.21 = 2,880.84 : x
  2. Step 2: Convert to fraction form
    6,391.89/9,590.21 = 2,880.84/x
  3. Step 3: Cross multiply
    6,391.89x = 9,590.21 × 2,880.84
  4. Step 4: Simplify right side
    6,391.89x = 27,627,860.58
  5. Step 5: Solve for x
    x = 27,627,860.58/6,391.89
  6. Step 6: Final answer
    x = 4,322.33

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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.