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Finding the Fourth Proportional to 3,258.02, 4,887.03 and 917.93

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Solution

The fourth proportional to 3,258.02, 4,887.03 and 917.93 is: 1,376.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258.02 : 4,887.03 = 917.93 : x
  2. Step 2: Convert to fraction form
    3,258.02/4,887.03 = 917.93/x
  3. Step 3: Cross multiply
    3,258.02x = 4,887.03 × 917.93
  4. Step 4: Simplify right side
    3,258.02x = 4,485,951.45
  5. Step 5: Solve for x
    x = 4,485,951.45/3,258.02
  6. Step 6: Final answer
    x = 1,376.90

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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.