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Finding the Fourth Proportional to 3,099.86, 4,650.09 and 1,019.89

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Solution

The fourth proportional to 3,099.86, 4,650.09 and 1,019.89 is: 1,529.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,099.86 : 4,650.09 = 1,019.89 : x
  2. Step 2: Convert to fraction form
    3,099.86/4,650.09 = 1,019.89/x
  3. Step 3: Cross multiply
    3,099.86x = 4,650.09 × 1,019.89
  4. Step 4: Simplify right side
    3,099.86x = 4,742,561.86
  5. Step 5: Solve for x
    x = 4,742,561.86/3,099.86
  6. Step 6: Final answer
    x = 1,529.93

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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.