Home / 1,954.08-2,911.38-1,861.20

Finding the Fourth Proportional to 1,954.08, 2,911.38 and 1,861.20

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Solution

The fourth proportional to 1,954.08, 2,911.38 and 1,861.20 is: 2,773.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,954.08 : 2,911.38 = 1,861.20 : x
  2. Step 2: Convert to fraction form
    1,954.08/2,911.38 = 1,861.20/x
  3. Step 3: Cross multiply
    1,954.08x = 2,911.38 × 1,861.20
  4. Step 4: Simplify right side
    1,954.08x = 5,418,660.46
  5. Step 5: Solve for x
    x = 5,418,660.46/1,954.08
  6. Step 6: Final answer
    x = 2,773.00

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.