Home / 1,395.09-2,091.24-572.22

Finding the Fourth Proportional to 1,395.09, 2,091.24 and 572.22

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Solution

The fourth proportional to 1,395.09, 2,091.24 and 572.22 is: 857.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,395.09 : 2,091.24 = 572.22 : x
  2. Step 2: Convert to fraction form
    1,395.09/2,091.24 = 572.22/x
  3. Step 3: Cross multiply
    1,395.09x = 2,091.24 × 572.22
  4. Step 4: Simplify right side
    1,395.09x = 1,196,649.35
  5. Step 5: Solve for x
    x = 1,196,649.35/1,395.09
  6. Step 6: Final answer
    x = 857.76

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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.