Home / 8,331.80-12,483.52-7,280.21

Finding the Fourth Proportional to 8,331.80, 12,483.52 and 7,280.21

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Solution

The fourth proportional to 8,331.80, 12,483.52 and 7,280.21 is: 10,907.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,331.80 : 12,483.52 = 7,280.21 : x
  2. Step 2: Convert to fraction form
    8,331.80/12,483.52 = 7,280.21/x
  3. Step 3: Cross multiply
    8,331.80x = 12,483.52 × 7,280.21
  4. Step 4: Simplify right side
    8,331.80x = 90,882,660.15
  5. Step 5: Solve for x
    x = 90,882,660.15/8,331.80
  6. Step 6: Final answer
    x = 10,907.93

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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.