Home / 1,258.51-1,738.91-1,214.17

Finding the Fourth Proportional to 1,258.51, 1,738.91 and 1,214.17

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Solution

The fourth proportional to 1,258.51, 1,738.91 and 1,214.17 is: 1,677.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.51 : 1,738.91 = 1,214.17 : x
  2. Step 2: Convert to fraction form
    1,258.51/1,738.91 = 1,214.17/x
  3. Step 3: Cross multiply
    1,258.51x = 1,738.91 × 1,214.17
  4. Step 4: Simplify right side
    1,258.51x = 2,111,332.35
  5. Step 5: Solve for x
    x = 2,111,332.35/1,258.51
  6. Step 6: Final answer
    x = 1,677.64

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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.