Home / 2,087.20-2,880.30-1,203

Finding the Fourth Proportional to 2,087.20, 2,880.30 and 1,203

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Solution

The fourth proportional to 2,087.20, 2,880.30 and 1,203 is: 1,660.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.20 : 2,880.30 = 1,203 : x
  2. Step 2: Convert to fraction form
    2,087.20/2,880.30 = 1,203/x
  3. Step 3: Cross multiply
    2,087.20x = 2,880.30 × 1,203
  4. Step 4: Simplify right side
    2,087.20x = 3,465,000.90
  5. Step 5: Solve for x
    x = 3,465,000.90/2,087.20
  6. Step 6: Final answer
    x = 1,660.12

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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.