Home / 1,941.51-2,679.71-1,278.44

Finding the Fourth Proportional to 1,941.51, 2,679.71 and 1,278.44

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Solution

The fourth proportional to 1,941.51, 2,679.71 and 1,278.44 is: 1,764.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,941.51 : 2,679.71 = 1,278.44 : x
  2. Step 2: Convert to fraction form
    1,941.51/2,679.71 = 1,278.44/x
  3. Step 3: Cross multiply
    1,941.51x = 2,679.71 × 1,278.44
  4. Step 4: Simplify right side
    1,941.51x = 3,425,848.45
  5. Step 5: Solve for x
    x = 3,425,848.45/1,941.51
  6. Step 6: Final answer
    x = 1,764.53

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1.5x scale

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.