Home / 8,521.38-12,785.15-2,975.54

Finding the Fourth Proportional to 8,521.38, 12,785.15 and 2,975.54

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Solution

The fourth proportional to 8,521.38, 12,785.15 and 2,975.54 is: 4,464.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,521.38 : 12,785.15 = 2,975.54 : x
  2. Step 2: Convert to fraction form
    8,521.38/12,785.15 = 2,975.54/x
  3. Step 3: Cross multiply
    8,521.38x = 12,785.15 × 2,975.54
  4. Step 4: Simplify right side
    8,521.38x = 38,042,742.32
  5. Step 5: Solve for x
    x = 38,042,742.32/8,521.38
  6. Step 6: Final answer
    x = 4,464.39

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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.