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Finding the Fourth Proportional to 1,258.92, 1,891.44 and 1,225.08

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Solution

The fourth proportional to 1,258.92, 1,891.44 and 1,225.08 is: 1,840.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258.92 : 1,891.44 = 1,225.08 : x
  2. Step 2: Convert to fraction form
    1,258.92/1,891.44 = 1,225.08/x
  3. Step 3: Cross multiply
    1,258.92x = 1,891.44 × 1,225.08
  4. Step 4: Simplify right side
    1,258.92x = 2,317,165.32
  5. Step 5: Solve for x
    x = 2,317,165.32/1,258.92
  6. Step 6: Final answer
    x = 1,840.60

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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.