Home / 8,428.20-12,651.96-4,540.20

Finding the Fourth Proportional to 8,428.20, 12,651.96 and 4,540.20

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Solution

The fourth proportional to 8,428.20, 12,651.96 and 4,540.20 is: 6,815.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.20 : 12,651.96 = 4,540.20 : x
  2. Step 2: Convert to fraction form
    8,428.20/12,651.96 = 4,540.20/x
  3. Step 3: Cross multiply
    8,428.20x = 12,651.96 × 4,540.20
  4. Step 4: Simplify right side
    8,428.20x = 57,442,428.79
  5. Step 5: Solve for x
    x = 57,442,428.79/8,428.20
  6. Step 6: Final answer
    x = 6,815.50

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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.