Home / 1,362.20-2,042.94-388.37

Finding the Fourth Proportional to 1,362.20, 2,042.94 and 388.37

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Solution

The fourth proportional to 1,362.20, 2,042.94 and 388.37 is: 582.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,362.20 : 2,042.94 = 388.37 : x
  2. Step 2: Convert to fraction form
    1,362.20/2,042.94 = 388.37/x
  3. Step 3: Cross multiply
    1,362.20x = 2,042.94 × 388.37
  4. Step 4: Simplify right side
    1,362.20x = 793,416.61
  5. Step 5: Solve for x
    x = 793,416.61/1,362.20
  6. Step 6: Final answer
    x = 582.45

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1.5x scale

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.