Home / 1,781.21-2,457.70-1,362.04

Finding the Fourth Proportional to 1,781.21, 2,457.70 and 1,362.04

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Solution

The fourth proportional to 1,781.21, 2,457.70 and 1,362.04 is: 1,879.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.21 : 2,457.70 = 1,362.04 : x
  2. Step 2: Convert to fraction form
    1,781.21/2,457.70 = 1,362.04/x
  3. Step 3: Cross multiply
    1,781.21x = 2,457.70 × 1,362.04
  4. Step 4: Simplify right side
    1,781.21x = 3,347,476.16
  5. Step 5: Solve for x
    x = 3,347,476.16/1,781.21
  6. Step 6: Final answer
    x = 1,879.32

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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.