Home / 9,413.04-12,989.56-5,221.20

Finding the Fourth Proportional to 9,413.04, 12,989.56 and 5,221.20

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Solution

The fourth proportional to 9,413.04, 12,989.56 and 5,221.20 is: 7,205.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,413.04 : 12,989.56 = 5,221.20 : x
  2. Step 2: Convert to fraction form
    9,413.04/12,989.56 = 5,221.20/x
  3. Step 3: Cross multiply
    9,413.04x = 12,989.56 × 5,221.20
  4. Step 4: Simplify right side
    9,413.04x = 67,821,090.67
  5. Step 5: Solve for x
    x = 67,821,090.67/9,413.04
  6. Step 6: Final answer
    x = 7,205.01

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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.