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Finding the Fourth Proportional to 4,653.98, 6,978.74 and 2,186.72

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Solution

The fourth proportional to 4,653.98, 6,978.74 and 2,186.72 is: 3,279.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,653.98 : 6,978.74 = 2,186.72 : x
  2. Step 2: Convert to fraction form
    4,653.98/6,978.74 = 2,186.72/x
  3. Step 3: Cross multiply
    4,653.98x = 6,978.74 × 2,186.72
  4. Step 4: Simplify right side
    4,653.98x = 15,260,550.33
  5. Step 5: Solve for x
    x = 15,260,550.33/4,653.98
  6. Step 6: Final answer
    x = 3,279.03

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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.