Home / 2,270.13-3,131.16-1,386.42

Finding the Fourth Proportional to 2,270.13, 3,131.16 and 1,386.42

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Solution

The fourth proportional to 2,270.13, 3,131.16 and 1,386.42 is: 1,912.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,270.13 : 3,131.16 = 1,386.42 : x
  2. Step 2: Convert to fraction form
    2,270.13/3,131.16 = 1,386.42/x
  3. Step 3: Cross multiply
    2,270.13x = 3,131.16 × 1,386.42
  4. Step 4: Simplify right side
    2,270.13x = 4,341,102.85
  5. Step 5: Solve for x
    x = 4,341,102.85/2,270.13
  6. Step 6: Final answer
    x = 1,912.27

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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.