Home / 2,811.60-4,213.76-1,885.77

Finding the Fourth Proportional to 2,811.60, 4,213.76 and 1,885.77

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Solution

The fourth proportional to 2,811.60, 4,213.76 and 1,885.77 is: 2,826.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.60 : 4,213.76 = 1,885.77 : x
  2. Step 2: Convert to fraction form
    2,811.60/4,213.76 = 1,885.77/x
  3. Step 3: Cross multiply
    2,811.60x = 4,213.76 × 1,885.77
  4. Step 4: Simplify right side
    2,811.60x = 7,946,172.77
  5. Step 5: Solve for x
    x = 7,946,172.77/2,811.60
  6. Step 6: Final answer
    x = 2,826.21

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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.