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Finding the Fourth Proportional to 2,783.76, 4,176.30 and 835.95

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Solution

The fourth proportional to 2,783.76, 4,176.30 and 835.95 is: 1,254.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783.76 : 4,176.30 = 835.95 : x
  2. Step 2: Convert to fraction form
    2,783.76/4,176.30 = 835.95/x
  3. Step 3: Cross multiply
    2,783.76x = 4,176.30 × 835.95
  4. Step 4: Simplify right side
    2,783.76x = 3,491,177.99
  5. Step 5: Solve for x
    x = 3,491,177.99/2,783.76
  6. Step 6: Final answer
    x = 1,254.12

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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.