Home / 2,389.12-3,299.36-1,896.96

Finding the Fourth Proportional to 2,389.12, 3,299.36 and 1,896.96

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Solution

The fourth proportional to 2,389.12, 3,299.36 and 1,896.96 is: 2,619.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,389.12 : 3,299.36 = 1,896.96 : x
  2. Step 2: Convert to fraction form
    2,389.12/3,299.36 = 1,896.96/x
  3. Step 3: Cross multiply
    2,389.12x = 3,299.36 × 1,896.96
  4. Step 4: Simplify right side
    2,389.12x = 6,258,753.95
  5. Step 5: Solve for x
    x = 6,258,753.95/2,389.12
  6. Step 6: Final answer
    x = 2,619.69

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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.