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Finding the Fourth Proportional to 2,644.79, 3,957.39 and 1,605.56

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Solution

The fourth proportional to 2,644.79, 3,957.39 and 1,605.56 is: 2,402.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,644.79 : 3,957.39 = 1,605.56 : x
  2. Step 2: Convert to fraction form
    2,644.79/3,957.39 = 1,605.56/x
  3. Step 3: Cross multiply
    2,644.79x = 3,957.39 × 1,605.56
  4. Step 4: Simplify right side
    2,644.79x = 6,353,807.30
  5. Step 5: Solve for x
    x = 6,353,807.30/2,644.79
  6. Step 6: Final answer
    x = 2,402.39

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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.