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Finding the Fourth Proportional to 8,955.84, 12,360.42 and 6,446.26

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Solution

The fourth proportional to 8,955.84, 12,360.42 and 6,446.26 is: 8,896.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,955.84 : 12,360.42 = 6,446.26 : x
  2. Step 2: Convert to fraction form
    8,955.84/12,360.42 = 6,446.26/x
  3. Step 3: Cross multiply
    8,955.84x = 12,360.42 × 6,446.26
  4. Step 4: Simplify right side
    8,955.84x = 79,678,479.85
  5. Step 5: Solve for x
    x = 79,678,479.85/8,955.84
  6. Step 6: Final answer
    x = 8,896.82

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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.