Home / 1,853.28-2,779.92-1,123.07

Finding the Fourth Proportional to 1,853.28, 2,779.92 and 1,123.07

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Solution

The fourth proportional to 1,853.28, 2,779.92 and 1,123.07 is: 1,684.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,853.28 : 2,779.92 = 1,123.07 : x
  2. Step 2: Convert to fraction form
    1,853.28/2,779.92 = 1,123.07/x
  3. Step 3: Cross multiply
    1,853.28x = 2,779.92 × 1,123.07
  4. Step 4: Simplify right side
    1,853.28x = 3,122,030.85
  5. Step 5: Solve for x
    x = 3,122,030.85/1,853.28
  6. Step 6: Final answer
    x = 1,684.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.