Home / 1,944.21-2,911.74-1,690.81

Finding the Fourth Proportional to 1,944.21, 2,911.74 and 1,690.81

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Solution

The fourth proportional to 1,944.21, 2,911.74 and 1,690.81 is: 2,532.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,944.21 : 2,911.74 = 1,690.81 : x
  2. Step 2: Convert to fraction form
    1,944.21/2,911.74 = 1,690.81/x
  3. Step 3: Cross multiply
    1,944.21x = 2,911.74 × 1,690.81
  4. Step 4: Simplify right side
    1,944.21x = 4,923,199.11
  5. Step 5: Solve for x
    x = 4,923,199.11/1,944.21
  6. Step 6: Final answer
    x = 2,532.24

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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.