Home / 1,789.70-2,683.80-1,605.18

Finding the Fourth Proportional to 1,789.70, 2,683.80 and 1,605.18

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Solution

The fourth proportional to 1,789.70, 2,683.80 and 1,605.18 is: 2,407.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,789.70 : 2,683.80 = 1,605.18 : x
  2. Step 2: Convert to fraction form
    1,789.70/2,683.80 = 1,605.18/x
  3. Step 3: Cross multiply
    1,789.70x = 2,683.80 × 1,605.18
  4. Step 4: Simplify right side
    1,789.70x = 4,307,992.15
  5. Step 5: Solve for x
    x = 4,307,992.15/1,789.70
  6. Step 6: Final answer
    x = 2,407.11

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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.