Home / 4,291.85-6,438.47-2,100.75

Finding the Fourth Proportional to 4,291.85, 6,438.47 and 2,100.75

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Solution

The fourth proportional to 4,291.85, 6,438.47 and 2,100.75 is: 3,151.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,291.85 : 6,438.47 = 2,100.75 : x
  2. Step 2: Convert to fraction form
    4,291.85/6,438.47 = 2,100.75/x
  3. Step 3: Cross multiply
    4,291.85x = 6,438.47 × 2,100.75
  4. Step 4: Simplify right side
    4,291.85x = 13,525,629.24
  5. Step 5: Solve for x
    x = 13,525,629.24/4,291.85
  6. Step 6: Final answer
    x = 3,151.47

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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.