Home / 1,559.79-2,147.92-1,393.94

Finding the Fourth Proportional to 1,559.79, 2,147.92 and 1,393.94

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Solution

The fourth proportional to 1,559.79, 2,147.92 and 1,393.94 is: 1,919.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.79 : 2,147.92 = 1,393.94 : x
  2. Step 2: Convert to fraction form
    1,559.79/2,147.92 = 1,393.94/x
  3. Step 3: Cross multiply
    1,559.79x = 2,147.92 × 1,393.94
  4. Step 4: Simplify right side
    1,559.79x = 2,994,073.49
  5. Step 5: Solve for x
    x = 2,994,073.49/1,559.79
  6. Step 6: Final answer
    x = 1,919.54

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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.