Home / 2,191.55-3,287.36-1,266.55

Finding the Fourth Proportional to 2,191.55, 3,287.36 and 1,266.55

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Solution

The fourth proportional to 2,191.55, 3,287.36 and 1,266.55 is: 1,899.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.55 : 3,287.36 = 1,266.55 : x
  2. Step 2: Convert to fraction form
    2,191.55/3,287.36 = 1,266.55/x
  3. Step 3: Cross multiply
    2,191.55x = 3,287.36 × 1,266.55
  4. Step 4: Simplify right side
    2,191.55x = 4,163,599.48
  5. Step 5: Solve for x
    x = 4,163,599.48/2,191.55
  6. Step 6: Final answer
    x = 1,899.84

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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.