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Finding the Fourth Proportional to 3,258.59, 4,887.87 and 793.40

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Solution

The fourth proportional to 3,258.59, 4,887.87 and 793.40 is: 1,190.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,258.59 : 4,887.87 = 793.40 : x
  2. Step 2: Convert to fraction form
    3,258.59/4,887.87 = 793.40/x
  3. Step 3: Cross multiply
    3,258.59x = 4,887.87 × 793.40
  4. Step 4: Simplify right side
    3,258.59x = 3,878,036.06
  5. Step 5: Solve for x
    x = 3,878,036.06/3,258.59
  6. Step 6: Final answer
    x = 1,190.10

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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.