Home / 2,130.58-3,196.78-1,157.38

Finding the Fourth Proportional to 2,130.58, 3,196.78 and 1,157.38

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Solution

The fourth proportional to 2,130.58, 3,196.78 and 1,157.38 is: 1,736.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.58 : 3,196.78 = 1,157.38 : x
  2. Step 2: Convert to fraction form
    2,130.58/3,196.78 = 1,157.38/x
  3. Step 3: Cross multiply
    2,130.58x = 3,196.78 × 1,157.38
  4. Step 4: Simplify right side
    2,130.58x = 3,699,889.24
  5. Step 5: Solve for x
    x = 3,699,889.24/2,130.58
  6. Step 6: Final answer
    x = 1,736.56

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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.