Home / 8,551.20-12,828.60-3,618.30

Finding the Fourth Proportional to 8,551.20, 12,828.60 and 3,618.30

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Solution

The fourth proportional to 8,551.20, 12,828.60 and 3,618.30 is: 5,428.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,551.20 : 12,828.60 = 3,618.30 : x
  2. Step 2: Convert to fraction form
    8,551.20/12,828.60 = 3,618.30/x
  3. Step 3: Cross multiply
    8,551.20x = 12,828.60 × 3,618.30
  4. Step 4: Simplify right side
    8,551.20x = 46,417,723.38
  5. Step 5: Solve for x
    x = 46,417,723.38/8,551.20
  6. Step 6: Final answer
    x = 5,428.21

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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.