Home / 1,258.08-1,735.56-1,021.56

Finding the Fourth Proportional to 1,258.08, 1,735.56 and 1,021.56

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Solution

The fourth proportional to 1,258.08, 1,735.56 and 1,021.56 is: 1,409.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.08 : 1,735.56 = 1,021.56 : x
  2. Step 2: Convert to fraction form
    1,258.08/1,735.56 = 1,021.56/x
  3. Step 3: Cross multiply
    1,258.08x = 1,735.56 × 1,021.56
  4. Step 4: Simplify right side
    1,258.08x = 1,772,978.67
  5. Step 5: Solve for x
    x = 1,772,978.67/1,258.08
  6. Step 6: Final answer
    x = 1,409.27

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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.