Home / 1,444.56-1,991.04-1,320.60

Finding the Fourth Proportional to 1,444.56, 1,991.04 and 1,320.60

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Solution

The fourth proportional to 1,444.56, 1,991.04 and 1,320.60 is: 1,820.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,444.56 : 1,991.04 = 1,320.60 : x
  2. Step 2: Convert to fraction form
    1,444.56/1,991.04 = 1,320.60/x
  3. Step 3: Cross multiply
    1,444.56x = 1,991.04 × 1,320.60
  4. Step 4: Simplify right side
    1,444.56x = 2,629,367.42
  5. Step 5: Solve for x
    x = 2,629,367.42/1,444.56
  6. Step 6: Final answer
    x = 1,820.19

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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.