Home / 1,938.86-2,907.18-1,323.31

Finding the Fourth Proportional to 1,938.86, 2,907.18 and 1,323.31

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Solution

The fourth proportional to 1,938.86, 2,907.18 and 1,323.31 is: 1,984.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.86 : 2,907.18 = 1,323.31 : x
  2. Step 2: Convert to fraction form
    1,938.86/2,907.18 = 1,323.31/x
  3. Step 3: Cross multiply
    1,938.86x = 2,907.18 × 1,323.31
  4. Step 4: Simplify right side
    1,938.86x = 3,847,094.09
  5. Step 5: Solve for x
    x = 3,847,094.09/1,938.86
  6. Step 6: Final answer
    x = 1,984.21

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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.