Home / 9,413.04-12,990.96-5,221.32

Finding the Fourth Proportional to 9,413.04, 12,990.96 and 5,221.32

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Solution

The fourth proportional to 9,413.04, 12,990.96 and 5,221.32 is: 7,205.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,413.04 : 12,990.96 = 5,221.32 : x
  2. Step 2: Convert to fraction form
    9,413.04/12,990.96 = 5,221.32/x
  3. Step 3: Cross multiply
    9,413.04x = 12,990.96 × 5,221.32
  4. Step 4: Simplify right side
    9,413.04x = 67,829,959.27
  5. Step 5: Solve for x
    x = 67,829,959.27/9,413.04
  6. Step 6: Final answer
    x = 7,205.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.