Home / 2,813.60-4,222.99-1,427.90

Finding the Fourth Proportional to 2,813.60, 4,222.99 and 1,427.90

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Solution

The fourth proportional to 2,813.60, 4,222.99 and 1,427.90 is: 2,143.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,813.60 : 4,222.99 = 1,427.90 : x
  2. Step 2: Convert to fraction form
    2,813.60/4,222.99 = 1,427.90/x
  3. Step 3: Cross multiply
    2,813.60x = 4,222.99 × 1,427.90
  4. Step 4: Simplify right side
    2,813.60x = 6,030,007.42
  5. Step 5: Solve for x
    x = 6,030,007.42/2,813.60
  6. Step 6: Final answer
    x = 2,143.16

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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.