Home / 2,431.10-3,645.74-1,912.12

Finding the Fourth Proportional to 2,431.10, 3,645.74 and 1,912.12

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Solution

The fourth proportional to 2,431.10, 3,645.74 and 1,912.12 is: 2,867.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.10 : 3,645.74 = 1,912.12 : x
  2. Step 2: Convert to fraction form
    2,431.10/3,645.74 = 1,912.12/x
  3. Step 3: Cross multiply
    2,431.10x = 3,645.74 × 1,912.12
  4. Step 4: Simplify right side
    2,431.10x = 6,971,088.03
  5. Step 5: Solve for x
    x = 6,971,088.03/2,431.10
  6. Step 6: Final answer
    x = 2,867.46

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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.