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Finding the Fourth Proportional to 2,596.60, 3,896.88 and 1,905.10

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Solution

The fourth proportional to 2,596.60, 3,896.88 and 1,905.10 is: 2,859.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,596.60 : 3,896.88 = 1,905.10 : x
  2. Step 2: Convert to fraction form
    2,596.60/3,896.88 = 1,905.10/x
  3. Step 3: Cross multiply
    2,596.60x = 3,896.88 × 1,905.10
  4. Step 4: Simplify right side
    2,596.60x = 7,423,946.09
  5. Step 5: Solve for x
    x = 7,423,946.09/2,596.60
  6. Step 6: Final answer
    x = 2,859.10

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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.