Home / 1,256.51-1,736.15-1,212.17

Finding the Fourth Proportional to 1,256.51, 1,736.15 and 1,212.17

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Solution

The fourth proportional to 1,256.51, 1,736.15 and 1,212.17 is: 1,674.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,256.51 : 1,736.15 = 1,212.17 : x
  2. Step 2: Convert to fraction form
    1,256.51/1,736.15 = 1,212.17/x
  3. Step 3: Cross multiply
    1,256.51x = 1,736.15 × 1,212.17
  4. Step 4: Simplify right side
    1,256.51x = 2,104,494.20
  5. Step 5: Solve for x
    x = 2,104,494.20/1,256.51
  6. Step 6: Final answer
    x = 1,674.87

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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.