Home / 8,286.61-12,428.29-3,091.45

Finding the Fourth Proportional to 8,286.61, 12,428.29 and 3,091.45

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Solution

The fourth proportional to 8,286.61, 12,428.29 and 3,091.45 is: 4,636.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,286.61 : 12,428.29 = 3,091.45 : x
  2. Step 2: Convert to fraction form
    8,286.61/12,428.29 = 3,091.45/x
  3. Step 3: Cross multiply
    8,286.61x = 12,428.29 × 3,091.45
  4. Step 4: Simplify right side
    8,286.61x = 38,421,437.12
  5. Step 5: Solve for x
    x = 38,421,437.12/8,286.61
  6. Step 6: Final answer
    x = 4,636.57

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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.