Home / 8,280.26-12,420.40-3,894.52

Finding the Fourth Proportional to 8,280.26, 12,420.40 and 3,894.52

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Solution

The fourth proportional to 8,280.26, 12,420.40 and 3,894.52 is: 5,841.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,280.26 : 12,420.40 = 3,894.52 : x
  2. Step 2: Convert to fraction form
    8,280.26/12,420.40 = 3,894.52/x
  3. Step 3: Cross multiply
    8,280.26x = 12,420.40 × 3,894.52
  4. Step 4: Simplify right side
    8,280.26x = 48,371,496.21
  5. Step 5: Solve for x
    x = 48,371,496.21/8,280.26
  6. Step 6: Final answer
    x = 5,841.78

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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.