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Finding the Fourth Proportional to 4,803.65, 7,157.72 and 4,279.62

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Solution

The fourth proportional to 4,803.65, 7,157.72 and 4,279.62 is: 6,376.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,803.65 : 7,157.72 = 4,279.62 : x
  2. Step 2: Convert to fraction form
    4,803.65/7,157.72 = 4,279.62/x
  3. Step 3: Cross multiply
    4,803.65x = 7,157.72 × 4,279.62
  4. Step 4: Simplify right side
    4,803.65x = 30,632,339.56
  5. Step 5: Solve for x
    x = 30,632,339.56/4,803.65
  6. Step 6: Final answer
    x = 6,376.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.