Home / 1,481.41-2,043.84-921.61

Finding the Fourth Proportional to 1,481.41, 2,043.84 and 921.61

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Solution

The fourth proportional to 1,481.41, 2,043.84 and 921.61 is: 1,271.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.41 : 2,043.84 = 921.61 : x
  2. Step 2: Convert to fraction form
    1,481.41/2,043.84 = 921.61/x
  3. Step 3: Cross multiply
    1,481.41x = 2,043.84 × 921.61
  4. Step 4: Simplify right side
    1,481.41x = 1,883,623.38
  5. Step 5: Solve for x
    x = 1,883,623.38/1,481.41
  6. Step 6: Final answer
    x = 1,271.51

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1.5x scale

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.