Home / 8,989.81-13,485.67-3,447.86

Finding the Fourth Proportional to 8,989.81, 13,485.67 and 3,447.86

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Solution

The fourth proportional to 8,989.81, 13,485.67 and 3,447.86 is: 5,172.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,989.81 : 13,485.67 = 3,447.86 : x
  2. Step 2: Convert to fraction form
    8,989.81/13,485.67 = 3,447.86/x
  3. Step 3: Cross multiply
    8,989.81x = 13,485.67 × 3,447.86
  4. Step 4: Simplify right side
    8,989.81x = 46,496,626.12
  5. Step 5: Solve for x
    x = 46,496,626.12/8,989.81
  6. Step 6: Final answer
    x = 5,172.15

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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.