Home / 2,857.16-4,282.50-1,212.68

Finding the Fourth Proportional to 2,857.16, 4,282.50 and 1,212.68

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Solution

The fourth proportional to 2,857.16, 4,282.50 and 1,212.68 is: 1,817.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,857.16 : 4,282.50 = 1,212.68 : x
  2. Step 2: Convert to fraction form
    2,857.16/4,282.50 = 1,212.68/x
  3. Step 3: Cross multiply
    2,857.16x = 4,282.50 × 1,212.68
  4. Step 4: Simplify right side
    2,857.16x = 5,193,302.10
  5. Step 5: Solve for x
    x = 5,193,302.10/2,857.16
  6. Step 6: Final answer
    x = 1,817.64

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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.