Home / 5,119.13-7,678.70-1,609.12

Finding the Fourth Proportional to 5,119.13, 7,678.70 and 1,609.12

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Solution

The fourth proportional to 5,119.13, 7,678.70 and 1,609.12 is: 2,413.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,119.13 : 7,678.70 = 1,609.12 : x
  2. Step 2: Convert to fraction form
    5,119.13/7,678.70 = 1,609.12/x
  3. Step 3: Cross multiply
    5,119.13x = 7,678.70 × 1,609.12
  4. Step 4: Simplify right side
    5,119.13x = 12,355,949.74
  5. Step 5: Solve for x
    x = 12,355,949.74/5,119.13
  6. Step 6: Final answer
    x = 2,413.68

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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.