Home / 3,290.85-4,931.19-2,191.23

Finding the Fourth Proportional to 3,290.85, 4,931.19 and 2,191.23

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Solution

The fourth proportional to 3,290.85, 4,931.19 and 2,191.23 is: 3,283.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,290.85 : 4,931.19 = 2,191.23 : x
  2. Step 2: Convert to fraction form
    3,290.85/4,931.19 = 2,191.23/x
  3. Step 3: Cross multiply
    3,290.85x = 4,931.19 × 2,191.23
  4. Step 4: Simplify right side
    3,290.85x = 10,805,371.46
  5. Step 5: Solve for x
    x = 10,805,371.46/3,290.85
  6. Step 6: Final answer
    x = 3,283.46

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1.5x scale

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.