Home / 1,192.21-1,788.13-326.32

Finding the Fourth Proportional to 1,192.21, 1,788.13 and 326.32

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Solution

The fourth proportional to 1,192.21, 1,788.13 and 326.32 is: 489.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.21 : 1,788.13 = 326.32 : x
  2. Step 2: Convert to fraction form
    1,192.21/1,788.13 = 326.32/x
  3. Step 3: Cross multiply
    1,192.21x = 1,788.13 × 326.32
  4. Step 4: Simplify right side
    1,192.21x = 583,506.24
  5. Step 5: Solve for x
    x = 583,506.24/1,192.21
  6. Step 6: Final answer
    x = 489.43

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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.