Home / 2,987.10-4,481.54-1,207.23

Finding the Fourth Proportional to 2,987.10, 4,481.54 and 1,207.23

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Solution

The fourth proportional to 2,987.10, 4,481.54 and 1,207.23 is: 1,811.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.10 : 4,481.54 = 1,207.23 : x
  2. Step 2: Convert to fraction form
    2,987.10/4,481.54 = 1,207.23/x
  3. Step 3: Cross multiply
    2,987.10x = 4,481.54 × 1,207.23
  4. Step 4: Simplify right side
    2,987.10x = 5,410,243.50
  5. Step 5: Solve for x
    x = 5,410,243.50/2,987.10
  6. Step 6: Final answer
    x = 1,811.20

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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.