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Finding the Fourth Proportional to 4,764.85, 7,148.72 and 1,804.20

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Solution

The fourth proportional to 4,764.85, 7,148.72 and 1,804.20 is: 2,706.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,764.85 : 7,148.72 = 1,804.20 : x
  2. Step 2: Convert to fraction form
    4,764.85/7,148.72 = 1,804.20/x
  3. Step 3: Cross multiply
    4,764.85x = 7,148.72 × 1,804.20
  4. Step 4: Simplify right side
    4,764.85x = 12,897,720.62
  5. Step 5: Solve for x
    x = 12,897,720.62/4,764.85
  6. Step 6: Final answer
    x = 2,706.85

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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.