Home / 2,135.31-3,204.96-1,315.19

Finding the Fourth Proportional to 2,135.31, 3,204.96 and 1,315.19

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Solution

The fourth proportional to 2,135.31, 3,204.96 and 1,315.19 is: 1,974.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.31 : 3,204.96 = 1,315.19 : x
  2. Step 2: Convert to fraction form
    2,135.31/3,204.96 = 1,315.19/x
  3. Step 3: Cross multiply
    2,135.31x = 3,204.96 × 1,315.19
  4. Step 4: Simplify right side
    2,135.31x = 4,215,115.32
  5. Step 5: Solve for x
    x = 4,215,115.32/2,135.31
  6. Step 6: Final answer
    x = 1,974.01

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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.