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Finding the Fourth Proportional to 8,477.88, 12,644.76 and 8,330.28

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Solution

The fourth proportional to 8,477.88, 12,644.76 and 8,330.28 is: 12,424.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,477.88 : 12,644.76 = 8,330.28 : x
  2. Step 2: Convert to fraction form
    8,477.88/12,644.76 = 8,330.28/x
  3. Step 3: Cross multiply
    8,477.88x = 12,644.76 × 8,330.28
  4. Step 4: Simplify right side
    8,477.88x = 105,334,391.33
  5. Step 5: Solve for x
    x = 105,334,391.33/8,477.88
  6. Step 6: Final answer
    x = 12,424.61

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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.