Home / 1,485.33-2,239.26-1,405.95

Finding the Fourth Proportional to 1,485.33, 2,239.26 and 1,405.95

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Solution

The fourth proportional to 1,485.33, 2,239.26 and 1,405.95 is: 2,119.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,485.33 : 2,239.26 = 1,405.95 : x
  2. Step 2: Convert to fraction form
    1,485.33/2,239.26 = 1,405.95/x
  3. Step 3: Cross multiply
    1,485.33x = 2,239.26 × 1,405.95
  4. Step 4: Simplify right side
    1,485.33x = 3,148,287.60
  5. Step 5: Solve for x
    x = 3,148,287.60/1,485.33
  6. Step 6: Final answer
    x = 2,119.59

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.