Home / 2,921.32-4,381.98-1,940.41

Finding the Fourth Proportional to 2,921.32, 4,381.98 and 1,940.41

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Solution

The fourth proportional to 2,921.32, 4,381.98 and 1,940.41 is: 2,910.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921.32 : 4,381.98 = 1,940.41 : x
  2. Step 2: Convert to fraction form
    2,921.32/4,381.98 = 1,940.41/x
  3. Step 3: Cross multiply
    2,921.32x = 4,381.98 × 1,940.41
  4. Step 4: Simplify right side
    2,921.32x = 8,502,837.81
  5. Step 5: Solve for x
    x = 8,502,837.81/2,921.32
  6. Step 6: Final answer
    x = 2,910.62

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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.