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Finding the Fourth Proportional to 1,905.04, 2,857.05 and 808.84

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Solution

The fourth proportional to 1,905.04, 2,857.05 and 808.84 is: 1,213.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.04 : 2,857.05 = 808.84 : x
  2. Step 2: Convert to fraction form
    1,905.04/2,857.05 = 808.84/x
  3. Step 3: Cross multiply
    1,905.04x = 2,857.05 × 808.84
  4. Step 4: Simplify right side
    1,905.04x = 2,310,896.32
  5. Step 5: Solve for x
    x = 2,310,896.32/1,905.04
  6. Step 6: Final answer
    x = 1,213.04

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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.