Home / 1,119.22-1,544.40-621.74

Finding the Fourth Proportional to 1,119.22, 1,544.40 and 621.74

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Solution

The fourth proportional to 1,119.22, 1,544.40 and 621.74 is: 857.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,119.22 : 1,544.40 = 621.74 : x
  2. Step 2: Convert to fraction form
    1,119.22/1,544.40 = 621.74/x
  3. Step 3: Cross multiply
    1,119.22x = 1,544.40 × 621.74
  4. Step 4: Simplify right side
    1,119.22x = 960,215.26
  5. Step 5: Solve for x
    x = 960,215.26/1,119.22
  6. Step 6: Final answer
    x = 857.93

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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.