Home / 1,719.89-2,378.10-1,692.09

Finding the Fourth Proportional to 1,719.89, 2,378.10 and 1,692.09

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Solution

The fourth proportional to 1,719.89, 2,378.10 and 1,692.09 is: 2,339.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,719.89 : 2,378.10 = 1,692.09 : x
  2. Step 2: Convert to fraction form
    1,719.89/2,378.10 = 1,692.09/x
  3. Step 3: Cross multiply
    1,719.89x = 2,378.10 × 1,692.09
  4. Step 4: Simplify right side
    1,719.89x = 4,023,959.23
  5. Step 5: Solve for x
    x = 4,023,959.23/1,719.89
  6. Step 6: Final answer
    x = 2,339.66

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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.