Home / 1,981.44-2,736.64-1,667.84

Finding the Fourth Proportional to 1,981.44, 2,736.64 and 1,667.84

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Solution

The fourth proportional to 1,981.44, 2,736.64 and 1,667.84 is: 2,303.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.44 : 2,736.64 = 1,667.84 : x
  2. Step 2: Convert to fraction form
    1,981.44/2,736.64 = 1,667.84/x
  3. Step 3: Cross multiply
    1,981.44x = 2,736.64 × 1,667.84
  4. Step 4: Simplify right side
    1,981.44x = 4,564,277.66
  5. Step 5: Solve for x
    x = 4,564,277.66/1,981.44
  6. Step 6: Final answer
    x = 2,303.52

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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.