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Finding the Fourth Proportional to 2,258.37, 3,387.65 and 698.24

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Solution

The fourth proportional to 2,258.37, 3,387.65 and 698.24 is: 1,047.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,258.37 : 3,387.65 = 698.24 : x
  2. Step 2: Convert to fraction form
    2,258.37/3,387.65 = 698.24/x
  3. Step 3: Cross multiply
    2,258.37x = 3,387.65 × 698.24
  4. Step 4: Simplify right side
    2,258.37x = 2,365,378.66
  5. Step 5: Solve for x
    x = 2,365,378.66/2,258.37
  6. Step 6: Final answer
    x = 1,047.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.