Home / 1,961.64-2,707.06-1,077.45

Finding the Fourth Proportional to 1,961.64, 2,707.06 and 1,077.45

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Solution

The fourth proportional to 1,961.64, 2,707.06 and 1,077.45 is: 1,486.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,961.64 : 2,707.06 = 1,077.45 : x
  2. Step 2: Convert to fraction form
    1,961.64/2,707.06 = 1,077.45/x
  3. Step 3: Cross multiply
    1,961.64x = 2,707.06 × 1,077.45
  4. Step 4: Simplify right side
    1,961.64x = 2,916,716.41
  5. Step 5: Solve for x
    x = 2,916,716.41/1,961.64
  6. Step 6: Final answer
    x = 1,486.88

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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.