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Finding the Fourth Proportional to 1,416.73, 1,956.93 and 1,089.19

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Solution

The fourth proportional to 1,416.73, 1,956.93 and 1,089.19 is: 1,504.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,416.73 : 1,956.93 = 1,089.19 : x
  2. Step 2: Convert to fraction form
    1,416.73/1,956.93 = 1,089.19/x
  3. Step 3: Cross multiply
    1,416.73x = 1,956.93 × 1,089.19
  4. Step 4: Simplify right side
    1,416.73x = 2,131,468.59
  5. Step 5: Solve for x
    x = 2,131,468.59/1,416.73
  6. Step 6: Final answer
    x = 1,504.50

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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.