Home / 3,211.51-4,431.66-1,813.99

Finding the Fourth Proportional to 3,211.51, 4,431.66 and 1,813.99

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Solution

The fourth proportional to 3,211.51, 4,431.66 and 1,813.99 is: 2,503.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.51 : 4,431.66 = 1,813.99 : x
  2. Step 2: Convert to fraction form
    3,211.51/4,431.66 = 1,813.99/x
  3. Step 3: Cross multiply
    3,211.51x = 4,431.66 × 1,813.99
  4. Step 4: Simplify right side
    3,211.51x = 8,038,986.92
  5. Step 5: Solve for x
    x = 8,038,986.92/3,211.51
  6. Step 6: Final answer
    x = 2,503.18

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.