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Finding the Fourth Proportional to 2,604.09, 3,905.85 and 656.30

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Solution

The fourth proportional to 2,604.09, 3,905.85 and 656.30 is: 984.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,604.09 : 3,905.85 = 656.30 : x
  2. Step 2: Convert to fraction form
    2,604.09/3,905.85 = 656.30/x
  3. Step 3: Cross multiply
    2,604.09x = 3,905.85 × 656.30
  4. Step 4: Simplify right side
    2,604.09x = 2,563,421.58
  5. Step 5: Solve for x
    x = 2,563,421.58/2,604.09
  6. Step 6: Final answer
    x = 984.38

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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.