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Finding the Fourth Proportional to 2,261.07, 3,390.69 and 873.63

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Solution

The fourth proportional to 2,261.07, 3,390.69 and 873.63 is: 1,310.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.07 : 3,390.69 = 873.63 : x
  2. Step 2: Convert to fraction form
    2,261.07/3,390.69 = 873.63/x
  3. Step 3: Cross multiply
    2,261.07x = 3,390.69 × 873.63
  4. Step 4: Simplify right side
    2,261.07x = 2,962,208.50
  5. Step 5: Solve for x
    x = 2,962,208.50/2,261.07
  6. Step 6: Final answer
    x = 1,310.09

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1.5x scale

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.