Home / 3,918.37-5,877.21-1,145.05

Finding the Fourth Proportional to 3,918.37, 5,877.21 and 1,145.05

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Solution

The fourth proportional to 3,918.37, 5,877.21 and 1,145.05 is: 1,717.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918.37 : 5,877.21 = 1,145.05 : x
  2. Step 2: Convert to fraction form
    3,918.37/5,877.21 = 1,145.05/x
  3. Step 3: Cross multiply
    3,918.37x = 5,877.21 × 1,145.05
  4. Step 4: Simplify right side
    3,918.37x = 6,729,699.31
  5. Step 5: Solve for x
    x = 6,729,699.31/3,918.37
  6. Step 6: Final answer
    x = 1,717.47

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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.