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Finding the Fourth Proportional to 2,391.93, 3,302.01 and 1,396.89

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Solution

The fourth proportional to 2,391.93, 3,302.01 and 1,396.89 is: 1,928.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,391.93 : 3,302.01 = 1,396.89 : x
  2. Step 2: Convert to fraction form
    2,391.93/3,302.01 = 1,396.89/x
  3. Step 3: Cross multiply
    2,391.93x = 3,302.01 × 1,396.89
  4. Step 4: Simplify right side
    2,391.93x = 4,612,544.75
  5. Step 5: Solve for x
    x = 4,612,544.75/2,391.93
  6. Step 6: Final answer
    x = 1,928.38

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1.5x scale

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.