Home / 1,722.45-2,376.98-936.49

Finding the Fourth Proportional to 1,722.45, 2,376.98 and 936.49

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Solution

The fourth proportional to 1,722.45, 2,376.98 and 936.49 is: 1,292.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,722.45 : 2,376.98 = 936.49 : x
  2. Step 2: Convert to fraction form
    1,722.45/2,376.98 = 936.49/x
  3. Step 3: Cross multiply
    1,722.45x = 2,376.98 × 936.49
  4. Step 4: Simplify right side
    1,722.45x = 2,226,018.00
  5. Step 5: Solve for x
    x = 2,226,018.00/1,722.45
  6. Step 6: Final answer
    x = 1,292.36

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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.