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Finding the Fourth Proportional to 2,889.56, 3,990.02 and 1,829.19

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Solution

The fourth proportional to 2,889.56, 3,990.02 and 1,829.19 is: 2,525.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,889.56 : 3,990.02 = 1,829.19 : x
  2. Step 2: Convert to fraction form
    2,889.56/3,990.02 = 1,829.19/x
  3. Step 3: Cross multiply
    2,889.56x = 3,990.02 × 1,829.19
  4. Step 4: Simplify right side
    2,889.56x = 7,298,495.54
  5. Step 5: Solve for x
    x = 7,298,495.54/2,889.56
  6. Step 6: Final answer
    x = 2,525.82

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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.