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Finding the Fourth Proportional to 8,658.99, 11,950.95 and 8,264.57

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Solution

The fourth proportional to 8,658.99, 11,950.95 and 8,264.57 is: 11,406.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.99 : 11,950.95 = 8,264.57 : x
  2. Step 2: Convert to fraction form
    8,658.99/11,950.95 = 8,264.57/x
  3. Step 3: Cross multiply
    8,658.99x = 11,950.95 × 8,264.57
  4. Step 4: Simplify right side
    8,658.99x = 98,769,403.09
  5. Step 5: Solve for x
    x = 98,769,403.09/8,658.99
  6. Step 6: Final answer
    x = 11,406.57

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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.