Home / 8,139.20-12,201.60-4,848.80

Finding the Fourth Proportional to 8,139.20, 12,201.60 and 4,848.80

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Solution

The fourth proportional to 8,139.20, 12,201.60 and 4,848.80 is: 7,268.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,139.20 : 12,201.60 = 4,848.80 : x
  2. Step 2: Convert to fraction form
    8,139.20/12,201.60 = 4,848.80/x
  3. Step 3: Cross multiply
    8,139.20x = 12,201.60 × 4,848.80
  4. Step 4: Simplify right side
    8,139.20x = 59,163,118.08
  5. Step 5: Solve for x
    x = 59,163,118.08/8,139.20
  6. Step 6: Final answer
    x = 7,268.91

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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.