Home / 5,381.68-8,072.58-1,918.96

Finding the Fourth Proportional to 5,381.68, 8,072.58 and 1,918.96

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Solution

The fourth proportional to 5,381.68, 8,072.58 and 1,918.96 is: 2,878.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,381.68 : 8,072.58 = 1,918.96 : x
  2. Step 2: Convert to fraction form
    5,381.68/8,072.58 = 1,918.96/x
  3. Step 3: Cross multiply
    5,381.68x = 8,072.58 × 1,918.96
  4. Step 4: Simplify right side
    5,381.68x = 15,490,958.12
  5. Step 5: Solve for x
    x = 15,490,958.12/5,381.68
  6. Step 6: Final answer
    x = 2,878.46

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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.