Home / 2,788.71-4,176.08-1,861.67

Finding the Fourth Proportional to 2,788.71, 4,176.08 and 1,861.67

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Solution

The fourth proportional to 2,788.71, 4,176.08 and 1,861.67 is: 2,787.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.71 : 4,176.08 = 1,861.67 : x
  2. Step 2: Convert to fraction form
    2,788.71/4,176.08 = 1,861.67/x
  3. Step 3: Cross multiply
    2,788.71x = 4,176.08 × 1,861.67
  4. Step 4: Simplify right side
    2,788.71x = 7,774,452.66
  5. Step 5: Solve for x
    x = 7,774,452.66/2,788.71
  6. Step 6: Final answer
    x = 2,787.83

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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.