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Finding the Fourth Proportional to 3,305.02, 4,957.10 and 839.62

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Solution

The fourth proportional to 3,305.02, 4,957.10 and 839.62 is: 1,259.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,305.02 : 4,957.10 = 839.62 : x
  2. Step 2: Convert to fraction form
    3,305.02/4,957.10 = 839.62/x
  3. Step 3: Cross multiply
    3,305.02x = 4,957.10 × 839.62
  4. Step 4: Simplify right side
    3,305.02x = 4,162,080.30
  5. Step 5: Solve for x
    x = 4,162,080.30/3,305.02
  6. Step 6: Final answer
    x = 1,259.32

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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.