Home / 1,938.69-2,909.66-1,556.37

Finding the Fourth Proportional to 1,938.69, 2,909.66 and 1,556.37

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Solution

The fourth proportional to 1,938.69, 2,909.66 and 1,556.37 is: 2,335.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.69 : 2,909.66 = 1,556.37 : x
  2. Step 2: Convert to fraction form
    1,938.69/2,909.66 = 1,556.37/x
  3. Step 3: Cross multiply
    1,938.69x = 2,909.66 × 1,556.37
  4. Step 4: Simplify right side
    1,938.69x = 4,528,499.75
  5. Step 5: Solve for x
    x = 4,528,499.75/1,938.69
  6. Step 6: Final answer
    x = 2,335.86

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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.