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Finding the Fourth Proportional to 2,174.04, 3,261.47 and 876.42

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Solution

The fourth proportional to 2,174.04, 3,261.47 and 876.42 is: 1,314.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,174.04 : 3,261.47 = 876.42 : x
  2. Step 2: Convert to fraction form
    2,174.04/3,261.47 = 876.42/x
  3. Step 3: Cross multiply
    2,174.04x = 3,261.47 × 876.42
  4. Step 4: Simplify right side
    2,174.04x = 2,858,413.16
  5. Step 5: Solve for x
    x = 2,858,413.16/2,174.04
  6. Step 6: Final answer
    x = 1,314.79

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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.