Home / 1,119.17-1,544.47-621.80

Finding the Fourth Proportional to 1,119.17, 1,544.47 and 621.80

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Solution

The fourth proportional to 1,119.17, 1,544.47 and 621.80 is: 858.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.17 : 1,544.47 = 621.80 : x
  2. Step 2: Convert to fraction form
    1,119.17/1,544.47 = 621.80/x
  3. Step 3: Cross multiply
    1,119.17x = 1,544.47 × 621.80
  4. Step 4: Simplify right side
    1,119.17x = 960,351.45
  5. Step 5: Solve for x
    x = 960,351.45/1,119.17
  6. Step 6: Final answer
    x = 858.09

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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.