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Finding the Fourth Proportional to 8,633.95, 12,887.90 and 7,409.23

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Solution

The fourth proportional to 8,633.95, 12,887.90 and 7,409.23 is: 11,059.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,633.95 : 12,887.90 = 7,409.23 : x
  2. Step 2: Convert to fraction form
    8,633.95/12,887.90 = 7,409.23/x
  3. Step 3: Cross multiply
    8,633.95x = 12,887.90 × 7,409.23
  4. Step 4: Simplify right side
    8,633.95x = 95,489,415.32
  5. Step 5: Solve for x
    x = 95,489,415.32/8,633.95
  6. Step 6: Final answer
    x = 11,059.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.