Home / 1,981.58-2,733.68-1,142.06

Finding the Fourth Proportional to 1,981.58, 2,733.68 and 1,142.06

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Solution

The fourth proportional to 1,981.58, 2,733.68 and 1,142.06 is: 1,575.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.58 : 2,733.68 = 1,142.06 : x
  2. Step 2: Convert to fraction form
    1,981.58/2,733.68 = 1,142.06/x
  3. Step 3: Cross multiply
    1,981.58x = 2,733.68 × 1,142.06
  4. Step 4: Simplify right side
    1,981.58x = 3,122,026.58
  5. Step 5: Solve for x
    x = 3,122,026.58/1,981.58
  6. Step 6: Final answer
    x = 1,575.52

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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.