Home / 5,413.63-8,120.75-2,642.67

Finding the Fourth Proportional to 5,413.63, 8,120.75 and 2,642.67

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Solution

The fourth proportional to 5,413.63, 8,120.75 and 2,642.67 is: 3,964.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,413.63 : 8,120.75 = 2,642.67 : x
  2. Step 2: Convert to fraction form
    5,413.63/8,120.75 = 2,642.67/x
  3. Step 3: Cross multiply
    5,413.63x = 8,120.75 × 2,642.67
  4. Step 4: Simplify right side
    5,413.63x = 21,460,462.40
  5. Step 5: Solve for x
    x = 21,460,462.40/5,413.63
  6. Step 6: Final answer
    x = 3,964.15

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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.