Home / 2,811.67-4,220.07-1,425.96

Finding the Fourth Proportional to 2,811.67, 4,220.07 and 1,425.96

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Solution

The fourth proportional to 2,811.67, 4,220.07 and 1,425.96 is: 2,140.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.67 : 4,220.07 = 1,425.96 : x
  2. Step 2: Convert to fraction form
    2,811.67/4,220.07 = 1,425.96/x
  3. Step 3: Cross multiply
    2,811.67x = 4,220.07 × 1,425.96
  4. Step 4: Simplify right side
    2,811.67x = 6,017,643.10
  5. Step 5: Solve for x
    x = 6,017,643.10/2,811.67
  6. Step 6: Final answer
    x = 2,140.24

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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.