Home / 1,395.81-2,090.58-1,085.22

Finding the Fourth Proportional to 1,395.81, 2,090.58 and 1,085.22

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Solution

The fourth proportional to 1,395.81, 2,090.58 and 1,085.22 is: 1,625.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.81 : 2,090.58 = 1,085.22 : x
  2. Step 2: Convert to fraction form
    1,395.81/2,090.58 = 1,085.22/x
  3. Step 3: Cross multiply
    1,395.81x = 2,090.58 × 1,085.22
  4. Step 4: Simplify right side
    1,395.81x = 2,268,739.23
  5. Step 5: Solve for x
    x = 2,268,739.23/1,395.81
  6. Step 6: Final answer
    x = 1,625.39

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.