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Finding the Fourth Proportional to 4,742.65, 7,114.80 and 1,967.80

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Solution

The fourth proportional to 4,742.65, 7,114.80 and 1,967.80 is: 2,952.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,742.65 : 7,114.80 = 1,967.80 : x
  2. Step 2: Convert to fraction form
    4,742.65/7,114.80 = 1,967.80/x
  3. Step 3: Cross multiply
    4,742.65x = 7,114.80 × 1,967.80
  4. Step 4: Simplify right side
    4,742.65x = 14,000,503.44
  5. Step 5: Solve for x
    x = 14,000,503.44/4,742.65
  6. Step 6: Final answer
    x = 2,952.04

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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.