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Finding the Fourth Proportional to 1,731.88, 2,389.99 and 945.92

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Solution

The fourth proportional to 1,731.88, 2,389.99 and 945.92 is: 1,305.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,731.88 : 2,389.99 = 945.92 : x
  2. Step 2: Convert to fraction form
    1,731.88/2,389.99 = 945.92/x
  3. Step 3: Cross multiply
    1,731.88x = 2,389.99 × 945.92
  4. Step 4: Simplify right side
    1,731.88x = 2,260,739.34
  5. Step 5: Solve for x
    x = 2,260,739.34/1,731.88
  6. Step 6: Final answer
    x = 1,305.37

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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.