Home / 2,631.24-3,627.60-2,157.36

Finding the Fourth Proportional to 2,631.24, 3,627.60 and 2,157.36

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Solution

The fourth proportional to 2,631.24, 3,627.60 and 2,157.36 is: 2,974.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.24 : 3,627.60 = 2,157.36 : x
  2. Step 2: Convert to fraction form
    2,631.24/3,627.60 = 2,157.36/x
  3. Step 3: Cross multiply
    2,631.24x = 3,627.60 × 2,157.36
  4. Step 4: Simplify right side
    2,631.24x = 7,826,039.14
  5. Step 5: Solve for x
    x = 7,826,039.14/2,631.24
  6. Step 6: Final answer
    x = 2,974.28

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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.