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Finding the Fourth Proportional to 1,707.73, 2,561.50 and 841.75

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Solution

The fourth proportional to 1,707.73, 2,561.50 and 841.75 is: 1,262.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,707.73 : 2,561.50 = 841.75 : x
  2. Step 2: Convert to fraction form
    1,707.73/2,561.50 = 841.75/x
  3. Step 3: Cross multiply
    1,707.73x = 2,561.50 × 841.75
  4. Step 4: Simplify right side
    1,707.73x = 2,156,142.63
  5. Step 5: Solve for x
    x = 2,156,142.63/1,707.73
  6. Step 6: Final answer
    x = 1,262.58

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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.