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Finding the Fourth Proportional to 2,080.08, 3,120.30 and 541.08

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Solution

The fourth proportional to 2,080.08, 3,120.30 and 541.08 is: 811.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,080.08 : 3,120.30 = 541.08 : x
  2. Step 2: Convert to fraction form
    2,080.08/3,120.30 = 541.08/x
  3. Step 3: Cross multiply
    2,080.08x = 3,120.30 × 541.08
  4. Step 4: Simplify right side
    2,080.08x = 1,688,331.92
  5. Step 5: Solve for x
    x = 1,688,331.92/2,080.08
  6. Step 6: Final answer
    x = 811.67

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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.