Home / 8,310.80-12,465.93-3,379.12

Finding the Fourth Proportional to 8,310.80, 12,465.93 and 3,379.12

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Solution

The fourth proportional to 8,310.80, 12,465.93 and 3,379.12 is: 5,068.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,310.80 : 12,465.93 = 3,379.12 : x
  2. Step 2: Convert to fraction form
    8,310.80/12,465.93 = 3,379.12/x
  3. Step 3: Cross multiply
    8,310.80x = 12,465.93 × 3,379.12
  4. Step 4: Simplify right side
    8,310.80x = 42,123,873.38
  5. Step 5: Solve for x
    x = 42,123,873.38/8,310.80
  6. Step 6: Final answer
    x = 5,068.57

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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.