Home / 1,717.12-2,369.62-931.18

Finding the Fourth Proportional to 1,717.12, 2,369.62 and 931.18

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Solution

The fourth proportional to 1,717.12, 2,369.62 and 931.18 is: 1,285.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.12 : 2,369.62 = 931.18 : x
  2. Step 2: Convert to fraction form
    1,717.12/2,369.62 = 931.18/x
  3. Step 3: Cross multiply
    1,717.12x = 2,369.62 × 931.18
  4. Step 4: Simplify right side
    1,717.12x = 2,206,542.75
  5. Step 5: Solve for x
    x = 2,206,542.75/1,717.12
  6. Step 6: Final answer
    x = 1,285.03

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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.