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Finding the Fourth Proportional to 2,263.86, 3,394.72 and 877.84

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Solution

The fourth proportional to 2,263.86, 3,394.72 and 877.84 is: 1,316.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,263.86 : 3,394.72 = 877.84 : x
  2. Step 2: Convert to fraction form
    2,263.86/3,394.72 = 877.84/x
  3. Step 3: Cross multiply
    2,263.86x = 3,394.72 × 877.84
  4. Step 4: Simplify right side
    2,263.86x = 2,980,021.00
  5. Step 5: Solve for x
    x = 2,980,021.00/2,263.86
  6. Step 6: Final answer
    x = 1,316.35

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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.