Home / 8,280.42-12,425.09-6,435.24

Finding the Fourth Proportional to 8,280.42, 12,425.09 and 6,435.24

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Solution

The fourth proportional to 8,280.42, 12,425.09 and 6,435.24 is: 9,656.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.42 : 12,425.09 = 6,435.24 : x
  2. Step 2: Convert to fraction form
    8,280.42/12,425.09 = 6,435.24/x
  3. Step 3: Cross multiply
    8,280.42x = 12,425.09 × 6,435.24
  4. Step 4: Simplify right side
    8,280.42x = 79,958,404.00
  5. Step 5: Solve for x
    x = 79,958,404.00/8,280.42
  6. Step 6: Final answer
    x = 9,656.32

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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.