Home / 8,413.47-12,612.16-3,147.05

Finding the Fourth Proportional to 8,413.47, 12,612.16 and 3,147.05

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Solution

The fourth proportional to 8,413.47, 12,612.16 and 3,147.05 is: 4,717.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,413.47 : 12,612.16 = 3,147.05 : x
  2. Step 2: Convert to fraction form
    8,413.47/12,612.16 = 3,147.05/x
  3. Step 3: Cross multiply
    8,413.47x = 12,612.16 × 3,147.05
  4. Step 4: Simplify right side
    8,413.47x = 39,691,070.53
  5. Step 5: Solve for x
    x = 39,691,070.53/8,413.47
  6. Step 6: Final answer
    x = 4,717.57

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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.