Home / 1,980.95-2,733.68-1,141.81

Finding the Fourth Proportional to 1,980.95, 2,733.68 and 1,141.81

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Solution

The fourth proportional to 1,980.95, 2,733.68 and 1,141.81 is: 1,575.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.95 : 2,733.68 = 1,141.81 : x
  2. Step 2: Convert to fraction form
    1,980.95/2,733.68 = 1,141.81/x
  3. Step 3: Cross multiply
    1,980.95x = 2,733.68 × 1,141.81
  4. Step 4: Simplify right side
    1,980.95x = 3,121,339.18
  5. Step 5: Solve for x
    x = 3,121,339.18/1,980.95
  6. Step 6: Final answer
    x = 1,575.68

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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.