Home / 2,157.98-2,977.91-1,213.75

Finding the Fourth Proportional to 2,157.98, 2,977.91 and 1,213.75

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Solution

The fourth proportional to 2,157.98, 2,977.91 and 1,213.75 is: 1,674.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.98 : 2,977.91 = 1,213.75 : x
  2. Step 2: Convert to fraction form
    2,157.98/2,977.91 = 1,213.75/x
  3. Step 3: Cross multiply
    2,157.98x = 2,977.91 × 1,213.75
  4. Step 4: Simplify right side
    2,157.98x = 3,614,441.30
  5. Step 5: Solve for x
    x = 3,614,441.30/2,157.98
  6. Step 6: Final answer
    x = 1,674.92

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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.