Home / 2,910.94-4,365.65-830.40

Finding the Fourth Proportional to 2,910.94, 4,365.65 and 830.40

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Solution

The fourth proportional to 2,910.94, 4,365.65 and 830.40 is: 1,245.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,910.94 : 4,365.65 = 830.40 : x
  2. Step 2: Convert to fraction form
    2,910.94/4,365.65 = 830.40/x
  3. Step 3: Cross multiply
    2,910.94x = 4,365.65 × 830.40
  4. Step 4: Simplify right side
    2,910.94x = 3,625,241.35
  5. Step 5: Solve for x
    x = 3,625,241.35/2,910.94
  6. Step 6: Final answer
    x = 1,245.39

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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.