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Finding the Fourth Proportional to 3,561.48, 5,343.44 and 1,918.19

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Solution

The fourth proportional to 3,561.48, 5,343.44 and 1,918.19 is: 2,877.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,561.48 : 5,343.44 = 1,918.19 : x
  2. Step 2: Convert to fraction form
    3,561.48/5,343.44 = 1,918.19/x
  3. Step 3: Cross multiply
    3,561.48x = 5,343.44 × 1,918.19
  4. Step 4: Simplify right side
    3,561.48x = 10,249,736.94
  5. Step 5: Solve for x
    x = 10,249,736.94/3,561.48
  6. Step 6: Final answer
    x = 2,877.94

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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.