Home / 8,413.07-12,627.80-6,420.06

Finding the Fourth Proportional to 8,413.07, 12,627.80 and 6,420.06

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Solution

The fourth proportional to 8,413.07, 12,627.80 and 6,420.06 is: 9,636.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.07 : 12,627.80 = 6,420.06 : x
  2. Step 2: Convert to fraction form
    8,413.07/12,627.80 = 6,420.06/x
  3. Step 3: Cross multiply
    8,413.07x = 12,627.80 × 6,420.06
  4. Step 4: Simplify right side
    8,413.07x = 81,071,201.57
  5. Step 5: Solve for x
    x = 81,071,201.57/8,413.07
  6. Step 6: Final answer
    x = 9,636.35

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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.