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Finding the Fourth Proportional to 5,153.97, 7,730.89 and 1,258.41

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Solution

The fourth proportional to 5,153.97, 7,730.89 and 1,258.41 is: 1,887.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,153.97 : 7,730.89 = 1,258.41 : x
  2. Step 2: Convert to fraction form
    5,153.97/7,730.89 = 1,258.41/x
  3. Step 3: Cross multiply
    5,153.97x = 7,730.89 × 1,258.41
  4. Step 4: Simplify right side
    5,153.97x = 9,728,626.14
  5. Step 5: Solve for x
    x = 9,728,626.14/5,153.97
  6. Step 6: Final answer
    x = 1,887.60

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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.