Home / 1,717.35-2,369.92-931.39

Finding the Fourth Proportional to 1,717.35, 2,369.92 and 931.39

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Solution

The fourth proportional to 1,717.35, 2,369.92 and 931.39 is: 1,285.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,717.35 : 2,369.92 = 931.39 : x
  2. Step 2: Convert to fraction form
    1,717.35/2,369.92 = 931.39/x
  3. Step 3: Cross multiply
    1,717.35x = 2,369.92 × 931.39
  4. Step 4: Simplify right side
    1,717.35x = 2,207,319.79
  5. Step 5: Solve for x
    x = 2,207,319.79/1,717.35
  6. Step 6: Final answer
    x = 1,285.31

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1.5x scale

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.