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Finding the Fourth Proportional to 6,178.40, 9,260.40 and 3,255.20

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Solution

The fourth proportional to 6,178.40, 9,260.40 and 3,255.20 is: 4,879.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,178.40 : 9,260.40 = 3,255.20 : x
  2. Step 2: Convert to fraction form
    6,178.40/9,260.40 = 3,255.20/x
  3. Step 3: Cross multiply
    6,178.40x = 9,260.40 × 3,255.20
  4. Step 4: Simplify right side
    6,178.40x = 30,144,454.08
  5. Step 5: Solve for x
    x = 30,144,454.08/6,178.40
  6. Step 6: Final answer
    x = 4,879.01

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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.