Home / 2,985.75-4,478.63-1,161.75

Finding the Fourth Proportional to 2,985.75, 4,478.63 and 1,161.75

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Solution

The fourth proportional to 2,985.75, 4,478.63 and 1,161.75 is: 1,742.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.75 : 4,478.63 = 1,161.75 : x
  2. Step 2: Convert to fraction form
    2,985.75/4,478.63 = 1,161.75/x
  3. Step 3: Cross multiply
    2,985.75x = 4,478.63 × 1,161.75
  4. Step 4: Simplify right side
    2,985.75x = 5,203,042.59
  5. Step 5: Solve for x
    x = 5,203,042.59/2,985.75
  6. Step 6: Final answer
    x = 1,742.63

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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.