Home / 1,991.04-2,747.93-1,433.35

Finding the Fourth Proportional to 1,991.04, 2,747.93 and 1,433.35

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Solution

The fourth proportional to 1,991.04, 2,747.93 and 1,433.35 is: 1,978.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991.04 : 2,747.93 = 1,433.35 : x
  2. Step 2: Convert to fraction form
    1,991.04/2,747.93 = 1,433.35/x
  3. Step 3: Cross multiply
    1,991.04x = 2,747.93 × 1,433.35
  4. Step 4: Simplify right side
    1,991.04x = 3,938,741.73
  5. Step 5: Solve for x
    x = 3,938,741.73/1,991.04
  6. Step 6: Final answer
    x = 1,978.24

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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.