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Finding the Fourth Proportional to 3,057, 4,585.53 and 748.50

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Solution

The fourth proportional to 3,057, 4,585.53 and 748.50 is: 1,122.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057 : 4,585.53 = 748.50 : x
  2. Step 2: Convert to fraction form
    3,057/4,585.53 = 748.50/x
  3. Step 3: Cross multiply
    3,057x = 4,585.53 × 748.50
  4. Step 4: Simplify right side
    3,057x = 3,432,269.21
  5. Step 5: Solve for x
    x = 3,432,269.21/3,057
  6. Step 6: Final answer
    x = 1,122.76

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Double scale
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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.