Home / 1,535.22-2,118.47-872.06

Finding the Fourth Proportional to 1,535.22, 2,118.47 and 872.06

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Solution

The fourth proportional to 1,535.22, 2,118.47 and 872.06 is: 1,203.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,535.22 : 2,118.47 = 872.06 : x
  2. Step 2: Convert to fraction form
    1,535.22/2,118.47 = 872.06/x
  3. Step 3: Cross multiply
    1,535.22x = 2,118.47 × 872.06
  4. Step 4: Simplify right side
    1,535.22x = 1,847,418.00
  5. Step 5: Solve for x
    x = 1,847,418.00/1,535.22
  6. Step 6: Final answer
    x = 1,203.36

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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.