Home / 2,191.53-3,287.30-1,266.50

Finding the Fourth Proportional to 2,191.53, 3,287.30 and 1,266.50

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Solution

The fourth proportional to 2,191.53, 3,287.30 and 1,266.50 is: 1,899.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,191.53 : 3,287.30 = 1,266.50 : x
  2. Step 2: Convert to fraction form
    2,191.53/3,287.30 = 1,266.50/x
  3. Step 3: Cross multiply
    2,191.53x = 3,287.30 × 1,266.50
  4. Step 4: Simplify right side
    2,191.53x = 4,163,342.68
  5. Step 5: Solve for x
    x = 4,163,342.68/2,191.53
  6. Step 6: Final answer
    x = 1,899.74

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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.