Home / 1,891.53-2,835.20-1,427.81

Finding the Fourth Proportional to 1,891.53, 2,835.20 and 1,427.81

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Solution

The fourth proportional to 1,891.53, 2,835.20 and 1,427.81 is: 2,140.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,891.53 : 2,835.20 = 1,427.81 : x
  2. Step 2: Convert to fraction form
    1,891.53/2,835.20 = 1,427.81/x
  3. Step 3: Cross multiply
    1,891.53x = 2,835.20 × 1,427.81
  4. Step 4: Simplify right side
    1,891.53x = 4,048,105.60
  5. Step 5: Solve for x
    x = 4,048,105.60/1,891.53
  6. Step 6: Final answer
    x = 2,140.12

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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.