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Finding the Fourth Proportional to 3,057, 4,585.50 and 1,209.12

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Solution

The fourth proportional to 3,057, 4,585.50 and 1,209.12 is: 1,813.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057 : 4,585.50 = 1,209.12 : x
  2. Step 2: Convert to fraction form
    3,057/4,585.50 = 1,209.12/x
  3. Step 3: Cross multiply
    3,057x = 4,585.50 × 1,209.12
  4. Step 4: Simplify right side
    3,057x = 5,544,419.76
  5. Step 5: Solve for x
    x = 5,544,419.76/3,057
  6. Step 6: Final answer
    x = 1,813.68

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Double scale
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Similar ratio
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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.