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Finding the Fourth Proportional to 2,895, 4,343.40 and 843

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Solution

The fourth proportional to 2,895, 4,343.40 and 843 is: 1,264.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,895 : 4,343.40 = 843 : x
  2. Step 2: Convert to fraction form
    2,895/4,343.40 = 843/x
  3. Step 3: Cross multiply
    2,895x = 4,343.40 × 843
  4. Step 4: Simplify right side
    2,895x = 3,661,486.20
  5. Step 5: Solve for x
    x = 3,661,486.20/2,895
  6. Step 6: Final answer
    x = 1,264.76

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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.