Home / 3,531.81-4,873.54-2,115.21

Finding the Fourth Proportional to 3,531.81, 4,873.54 and 2,115.21

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Solution

The fourth proportional to 3,531.81, 4,873.54 and 2,115.21 is: 2,918.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,531.81 : 4,873.54 = 2,115.21 : x
  2. Step 2: Convert to fraction form
    3,531.81/4,873.54 = 2,115.21/x
  3. Step 3: Cross multiply
    3,531.81x = 4,873.54 × 2,115.21
  4. Step 4: Simplify right side
    3,531.81x = 10,308,560.54
  5. Step 5: Solve for x
    x = 10,308,560.54/3,531.81
  6. Step 6: Final answer
    x = 2,918.78

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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.