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Finding the Fourth Proportional to 2,174.36, 3,259.56 and 874.94

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Solution

The fourth proportional to 2,174.36, 3,259.56 and 874.94 is: 1,311.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.36 : 3,259.56 = 874.94 : x
  2. Step 2: Convert to fraction form
    2,174.36/3,259.56 = 874.94/x
  3. Step 3: Cross multiply
    2,174.36x = 3,259.56 × 874.94
  4. Step 4: Simplify right side
    2,174.36x = 2,851,927.58
  5. Step 5: Solve for x
    x = 2,851,927.58/2,174.36
  6. Step 6: Final answer
    x = 1,311.62

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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.