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Finding the Fourth Proportional to 2,091, 2,885.58 and 1,263

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Solution

The fourth proportional to 2,091, 2,885.58 and 1,263 is: 1,742.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091 : 2,885.58 = 1,263 : x
  2. Step 2: Convert to fraction form
    2,091/2,885.58 = 1,263/x
  3. Step 3: Cross multiply
    2,091x = 2,885.58 × 1,263
  4. Step 4: Simplify right side
    2,091x = 3,644,487.54
  5. Step 5: Solve for x
    x = 3,644,487.54/2,091
  6. Step 6: Final answer
    x = 1,742.94

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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.