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Finding the Fourth Proportional to 2,742.79, 4,114.83 and 893.90

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Solution

The fourth proportional to 2,742.79, 4,114.83 and 893.90 is: 1,341.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,742.79 : 4,114.83 = 893.90 : x
  2. Step 2: Convert to fraction form
    2,742.79/4,114.83 = 893.90/x
  3. Step 3: Cross multiply
    2,742.79x = 4,114.83 × 893.90
  4. Step 4: Simplify right side
    2,742.79x = 3,678,235.27
  5. Step 5: Solve for x
    x = 3,678,235.27/2,742.79
  6. Step 6: Final answer
    x = 1,341.06

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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.