Home / 1,781.33-2,459.01-1,277.51

Finding the Fourth Proportional to 1,781.33, 2,459.01 and 1,277.51

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Solution

The fourth proportional to 1,781.33, 2,459.01 and 1,277.51 is: 1,763.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,781.33 : 2,459.01 = 1,277.51 : x
  2. Step 2: Convert to fraction form
    1,781.33/2,459.01 = 1,277.51/x
  3. Step 3: Cross multiply
    1,781.33x = 2,459.01 × 1,277.51
  4. Step 4: Simplify right side
    1,781.33x = 3,141,409.87
  5. Step 5: Solve for x
    x = 3,141,409.87/1,781.33
  6. Step 6: Final answer
    x = 1,763.52

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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.