Home / 1,119.21-1,544.59-621.94

Finding the Fourth Proportional to 1,119.21, 1,544.59 and 621.94

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Solution

The fourth proportional to 1,119.21, 1,544.59 and 621.94 is: 858.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.21 : 1,544.59 = 621.94 : x
  2. Step 2: Convert to fraction form
    1,119.21/1,544.59 = 621.94/x
  3. Step 3: Cross multiply
    1,119.21x = 1,544.59 × 621.94
  4. Step 4: Simplify right side
    1,119.21x = 960,642.30
  5. Step 5: Solve for x
    x = 960,642.30/1,119.21
  6. Step 6: Final answer
    x = 858.32

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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.