Home / 8,965.08-12,371.94-5,428.62

Finding the Fourth Proportional to 8,965.08, 12,371.94 and 5,428.62

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Solution

The fourth proportional to 8,965.08, 12,371.94 and 5,428.62 is: 7,491.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.08 : 12,371.94 = 5,428.62 : x
  2. Step 2: Convert to fraction form
    8,965.08/12,371.94 = 5,428.62/x
  3. Step 3: Cross multiply
    8,965.08x = 12,371.94 × 5,428.62
  4. Step 4: Simplify right side
    8,965.08x = 67,162,560.92
  5. Step 5: Solve for x
    x = 67,162,560.92/8,965.08
  6. Step 6: Final answer
    x = 7,491.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.