Home / 8,428.29-12,636.36-2,581.71

Finding the Fourth Proportional to 8,428.29, 12,636.36 and 2,581.71

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Solution

The fourth proportional to 8,428.29, 12,636.36 and 2,581.71 is: 3,870.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.29 : 12,636.36 = 2,581.71 : x
  2. Step 2: Convert to fraction form
    8,428.29/12,636.36 = 2,581.71/x
  3. Step 3: Cross multiply
    8,428.29x = 12,636.36 × 2,581.71
  4. Step 4: Simplify right side
    8,428.29x = 32,623,416.98
  5. Step 5: Solve for x
    x = 32,623,416.98/8,428.29
  6. Step 6: Final answer
    x = 3,870.70

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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.