Home / 8,280.36-12,415.32-3,530.88

Finding the Fourth Proportional to 8,280.36, 12,415.32 and 3,530.88

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Solution

The fourth proportional to 8,280.36, 12,415.32 and 3,530.88 is: 5,294.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.36 : 12,415.32 = 3,530.88 : x
  2. Step 2: Convert to fraction form
    8,280.36/12,415.32 = 3,530.88/x
  3. Step 3: Cross multiply
    8,280.36x = 12,415.32 × 3,530.88
  4. Step 4: Simplify right side
    8,280.36x = 43,837,005.08
  5. Step 5: Solve for x
    x = 43,837,005.08/8,280.36
  6. Step 6: Final answer
    x = 5,294.09

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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.