Home / 5,485.60-8,228.40-5,453.20

Finding the Fourth Proportional to 5,485.60, 8,228.40 and 5,453.20

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Solution

The fourth proportional to 5,485.60, 8,228.40 and 5,453.20 is: 8,179.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,485.60 : 8,228.40 = 5,453.20 : x
  2. Step 2: Convert to fraction form
    5,485.60/8,228.40 = 5,453.20/x
  3. Step 3: Cross multiply
    5,485.60x = 8,228.40 × 5,453.20
  4. Step 4: Simplify right side
    5,485.60x = 44,871,110.88
  5. Step 5: Solve for x
    x = 44,871,110.88/5,485.60
  6. Step 6: Final answer
    x = 8,179.80

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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.