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Finding the Fourth Proportional to 2,804.01, 3,868.20 and 1,808.79

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Solution

The fourth proportional to 2,804.01, 3,868.20 and 1,808.79 is: 2,495.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,804.01 : 3,868.20 = 1,808.79 : x
  2. Step 2: Convert to fraction form
    2,804.01/3,868.20 = 1,808.79/x
  3. Step 3: Cross multiply
    2,804.01x = 3,868.20 × 1,808.79
  4. Step 4: Simplify right side
    2,804.01x = 6,996,761.48
  5. Step 5: Solve for x
    x = 6,996,761.48/2,804.01
  6. Step 6: Final answer
    x = 2,495.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.