Home / 3,243.98-4,475.64-1,918.12

Finding the Fourth Proportional to 3,243.98, 4,475.64 and 1,918.12

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Solution

The fourth proportional to 3,243.98, 4,475.64 and 1,918.12 is: 2,646.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,243.98 : 4,475.64 = 1,918.12 : x
  2. Step 2: Convert to fraction form
    3,243.98/4,475.64 = 1,918.12/x
  3. Step 3: Cross multiply
    3,243.98x = 4,475.64 × 1,918.12
  4. Step 4: Simplify right side
    3,243.98x = 8,584,814.60
  5. Step 5: Solve for x
    x = 8,584,814.60/3,243.98
  6. Step 6: Final answer
    x = 2,646.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.