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Finding the Fourth Proportional to 2,596.27, 3,894.42 and 648.40

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Solution

The fourth proportional to 2,596.27, 3,894.42 and 648.40 is: 972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,596.27 : 3,894.42 = 648.40 : x
  2. Step 2: Convert to fraction form
    2,596.27/3,894.42 = 648.40/x
  3. Step 3: Cross multiply
    2,596.27x = 3,894.42 × 648.40
  4. Step 4: Simplify right side
    2,596.27x = 2,525,141.93
  5. Step 5: Solve for x
    x = 2,525,141.93/2,596.27
  6. Step 6: Final answer
    x = 972.60

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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.