Home / 2,970.88-4,101.36-2,774.56

Finding the Fourth Proportional to 2,970.88, 4,101.36 and 2,774.56

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Solution

The fourth proportional to 2,970.88, 4,101.36 and 2,774.56 is: 3,830.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,970.88 : 4,101.36 = 2,774.56 : x
  2. Step 2: Convert to fraction form
    2,970.88/4,101.36 = 2,774.56/x
  3. Step 3: Cross multiply
    2,970.88x = 4,101.36 × 2,774.56
  4. Step 4: Simplify right side
    2,970.88x = 11,379,469.40
  5. Step 5: Solve for x
    x = 11,379,469.40/2,970.88
  6. Step 6: Final answer
    x = 3,830.34

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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.