Home / 3,153.88-4,347.78-2,157.58

Finding the Fourth Proportional to 3,153.88, 4,347.78 and 2,157.58

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Solution

The fourth proportional to 3,153.88, 4,347.78 and 2,157.58 is: 2,974.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,153.88 : 4,347.78 = 2,157.58 : x
  2. Step 2: Convert to fraction form
    3,153.88/4,347.78 = 2,157.58/x
  3. Step 3: Cross multiply
    3,153.88x = 4,347.78 × 2,157.58
  4. Step 4: Simplify right side
    3,153.88x = 9,380,683.17
  5. Step 5: Solve for x
    x = 9,380,683.17/3,153.88
  6. Step 6: Final answer
    x = 2,974.33

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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.