Home / 2,191.13-3,266.40-2,157.41

Finding the Fourth Proportional to 2,191.13, 3,266.40 and 2,157.41

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Solution

The fourth proportional to 2,191.13, 3,266.40 and 2,157.41 is: 3,216.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.13 : 3,266.40 = 2,157.41 : x
  2. Step 2: Convert to fraction form
    2,191.13/3,266.40 = 2,157.41/x
  3. Step 3: Cross multiply
    2,191.13x = 3,266.40 × 2,157.41
  4. Step 4: Simplify right side
    2,191.13x = 7,046,965.03
  5. Step 5: Solve for x
    x = 7,046,965.03/2,191.13
  6. Step 6: Final answer
    x = 3,216.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.