Home / 7,413.30-11,128.05-4,643.10

Finding the Fourth Proportional to 7,413.30, 11,128.05 and 4,643.10

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Solution

The fourth proportional to 7,413.30, 11,128.05 and 4,643.10 is: 6,969.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,413.30 : 11,128.05 = 4,643.10 : x
  2. Step 2: Convert to fraction form
    7,413.30/11,128.05 = 4,643.10/x
  3. Step 3: Cross multiply
    7,413.30x = 11,128.05 × 4,643.10
  4. Step 4: Simplify right side
    7,413.30x = 51,668,648.96
  5. Step 5: Solve for x
    x = 51,668,648.96/7,413.30
  6. Step 6: Final answer
    x = 6,969.72

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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.