Home / 3,570-4,921.44-2,774.40

Finding the Fourth Proportional to 3,570, 4,921.44 and 2,774.40

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Solution

The fourth proportional to 3,570, 4,921.44 and 2,774.40 is: 3,824.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,570 : 4,921.44 = 2,774.40 : x
  2. Step 2: Convert to fraction form
    3,570/4,921.44 = 2,774.40/x
  3. Step 3: Cross multiply
    3,570x = 4,921.44 × 2,774.40
  4. Step 4: Simplify right side
    3,570x = 13,654,043.14
  5. Step 5: Solve for x
    x = 13,654,043.14/3,570
  6. Step 6: Final answer
    x = 3,824.66

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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.