Home / 8,428.43-12,641.08-2,806.19

Finding the Fourth Proportional to 8,428.43, 12,641.08 and 2,806.19

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Solution

The fourth proportional to 8,428.43, 12,641.08 and 2,806.19 is: 4,208.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.43 : 12,641.08 = 2,806.19 : x
  2. Step 2: Convert to fraction form
    8,428.43/12,641.08 = 2,806.19/x
  3. Step 3: Cross multiply
    8,428.43x = 12,641.08 × 2,806.19
  4. Step 4: Simplify right side
    8,428.43x = 35,473,259.99
  5. Step 5: Solve for x
    x = 35,473,259.99/8,428.43
  6. Step 6: Final answer
    x = 4,208.76

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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.