Home / 8,420.14-12,631.62-2,575.38

Finding the Fourth Proportional to 8,420.14, 12,631.62 and 2,575.38

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Solution

The fourth proportional to 8,420.14, 12,631.62 and 2,575.38 is: 3,863.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.14 : 12,631.62 = 2,575.38 : x
  2. Step 2: Convert to fraction form
    8,420.14/12,631.62 = 2,575.38/x
  3. Step 3: Cross multiply
    8,420.14x = 12,631.62 × 2,575.38
  4. Step 4: Simplify right side
    8,420.14x = 32,531,221.52
  5. Step 5: Solve for x
    x = 32,531,221.52/8,420.14
  6. Step 6: Final answer
    x = 3,863.50

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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.