Home / 2,998.12-4,131.68-2,157.34

Finding the Fourth Proportional to 2,998.12, 4,131.68 and 2,157.34

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Solution

The fourth proportional to 2,998.12, 4,131.68 and 2,157.34 is: 2,973.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,998.12 : 4,131.68 = 2,157.34 : x
  2. Step 2: Convert to fraction form
    2,998.12/4,131.68 = 2,157.34/x
  3. Step 3: Cross multiply
    2,998.12x = 4,131.68 × 2,157.34
  4. Step 4: Simplify right side
    2,998.12x = 8,913,438.53
  5. Step 5: Solve for x
    x = 8,913,438.53/2,998.12
  6. Step 6: Final answer
    x = 2,973.01

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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.