Home / 1,362.16-2,043.32-388.20

Finding the Fourth Proportional to 1,362.16, 2,043.32 and 388.20

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Solution

The fourth proportional to 1,362.16, 2,043.32 and 388.20 is: 582.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.16 : 2,043.32 = 388.20 : x
  2. Step 2: Convert to fraction form
    1,362.16/2,043.32 = 388.20/x
  3. Step 3: Cross multiply
    1,362.16x = 2,043.32 × 388.20
  4. Step 4: Simplify right side
    1,362.16x = 793,216.82
  5. Step 5: Solve for x
    x = 793,216.82/1,362.16
  6. Step 6: Final answer
    x = 582.32

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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.