Home / 2,975.88-4,470.66-2,100.40

Finding the Fourth Proportional to 2,975.88, 4,470.66 and 2,100.40

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Solution

The fourth proportional to 2,975.88, 4,470.66 and 2,100.40 is: 3,155.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,975.88 : 4,470.66 = 2,100.40 : x
  2. Step 2: Convert to fraction form
    2,975.88/4,470.66 = 2,100.40/x
  3. Step 3: Cross multiply
    2,975.88x = 4,470.66 × 2,100.40
  4. Step 4: Simplify right side
    2,975.88x = 9,390,163.09
  5. Step 5: Solve for x
    x = 9,390,163.09/2,975.88
  6. Step 6: Final answer
    x = 3,155.42

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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.