Home / 7,931.85-11,878.83-4,413.12

Finding the Fourth Proportional to 7,931.85, 11,878.83 and 4,413.12

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Solution

The fourth proportional to 7,931.85, 11,878.83 and 4,413.12 is: 6,609.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.85 : 11,878.83 = 4,413.12 : x
  2. Step 2: Convert to fraction form
    7,931.85/11,878.83 = 4,413.12/x
  3. Step 3: Cross multiply
    7,931.85x = 11,878.83 × 4,413.12
  4. Step 4: Simplify right side
    7,931.85x = 52,422,702.25
  5. Step 5: Solve for x
    x = 52,422,702.25/7,931.85
  6. Step 6: Final answer
    x = 6,609.14

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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.