Home / 2,638.36-3,957.54-1,177.12

Finding the Fourth Proportional to 2,638.36, 3,957.54 and 1,177.12

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Solution

The fourth proportional to 2,638.36, 3,957.54 and 1,177.12 is: 1,765.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.36 : 3,957.54 = 1,177.12 : x
  2. Step 2: Convert to fraction form
    2,638.36/3,957.54 = 1,177.12/x
  3. Step 3: Cross multiply
    2,638.36x = 3,957.54 × 1,177.12
  4. Step 4: Simplify right side
    2,638.36x = 4,658,499.48
  5. Step 5: Solve for x
    x = 4,658,499.48/2,638.36
  6. Step 6: Final answer
    x = 1,765.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.