Home / 2,130.67-3,197.99-1,091.42

Finding the Fourth Proportional to 2,130.67, 3,197.99 and 1,091.42

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Solution

The fourth proportional to 2,130.67, 3,197.99 and 1,091.42 is: 1,638.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,130.67 : 3,197.99 = 1,091.42 : x
  2. Step 2: Convert to fraction form
    2,130.67/3,197.99 = 1,091.42/x
  3. Step 3: Cross multiply
    2,130.67x = 3,197.99 × 1,091.42
  4. Step 4: Simplify right side
    2,130.67x = 3,490,328.80
  5. Step 5: Solve for x
    x = 3,490,328.80/2,130.67
  6. Step 6: Final answer
    x = 1,638.14

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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.