Home / 2,599.12-3,899.99-1,138.28

Finding the Fourth Proportional to 2,599.12, 3,899.99 and 1,138.28

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Solution

The fourth proportional to 2,599.12, 3,899.99 and 1,138.28 is: 1,708.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,599.12 : 3,899.99 = 1,138.28 : x
  2. Step 2: Convert to fraction form
    2,599.12/3,899.99 = 1,138.28/x
  3. Step 3: Cross multiply
    2,599.12x = 3,899.99 × 1,138.28
  4. Step 4: Simplify right side
    2,599.12x = 4,439,293.21
  5. Step 5: Solve for x
    x = 4,439,293.21/2,599.12
  6. Step 6: Final answer
    x = 1,708.00

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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.