Home / 2,486.13-3,430.73-1,491.21

Finding the Fourth Proportional to 2,486.13, 3,430.73 and 1,491.21

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Solution

The fourth proportional to 2,486.13, 3,430.73 and 1,491.21 is: 2,057.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.13 : 3,430.73 = 1,491.21 : x
  2. Step 2: Convert to fraction form
    2,486.13/3,430.73 = 1,491.21/x
  3. Step 3: Cross multiply
    2,486.13x = 3,430.73 × 1,491.21
  4. Step 4: Simplify right side
    2,486.13x = 5,115,938.88
  5. Step 5: Solve for x
    x = 5,115,938.88/2,486.13
  6. Step 6: Final answer
    x = 2,057.79

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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.