Home / 2,856.48-4,284.39-1,211.81

Finding the Fourth Proportional to 2,856.48, 4,284.39 and 1,211.81

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Solution

The fourth proportional to 2,856.48, 4,284.39 and 1,211.81 is: 1,817.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.48 : 4,284.39 = 1,211.81 : x
  2. Step 2: Convert to fraction form
    2,856.48/4,284.39 = 1,211.81/x
  3. Step 3: Cross multiply
    2,856.48x = 4,284.39 × 1,211.81
  4. Step 4: Simplify right side
    2,856.48x = 5,191,849.77
  5. Step 5: Solve for x
    x = 5,191,849.77/2,856.48
  6. Step 6: Final answer
    x = 1,817.57

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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.