Home / 1,258.71-1,736.95-727.62

Finding the Fourth Proportional to 1,258.71, 1,736.95 and 727.62

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Solution

The fourth proportional to 1,258.71, 1,736.95 and 727.62 is: 1,004.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.71 : 1,736.95 = 727.62 : x
  2. Step 2: Convert to fraction form
    1,258.71/1,736.95 = 727.62/x
  3. Step 3: Cross multiply
    1,258.71x = 1,736.95 × 727.62
  4. Step 4: Simplify right side
    1,258.71x = 1,263,835.92
  5. Step 5: Solve for x
    x = 1,263,835.92/1,258.71
  6. Step 6: Final answer
    x = 1,004.07

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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.