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Finding the Fourth Proportional to 4,764.12, 7,146.90 and 1,685.88

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Solution

The fourth proportional to 4,764.12, 7,146.90 and 1,685.88 is: 2,529.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,764.12 : 7,146.90 = 1,685.88 : x
  2. Step 2: Convert to fraction form
    4,764.12/7,146.90 = 1,685.88/x
  3. Step 3: Cross multiply
    4,764.12x = 7,146.90 × 1,685.88
  4. Step 4: Simplify right side
    4,764.12x = 12,048,815.77
  5. Step 5: Solve for x
    x = 12,048,815.77/4,764.12
  6. Step 6: Final answer
    x = 2,529.07

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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.