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Finding the Fourth Proportional to 9,912.80, 14,877.60 and 4,073.60

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Solution

The fourth proportional to 9,912.80, 14,877.60 and 4,073.60 is: 6,113.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.80 : 14,877.60 = 4,073.60 : x
  2. Step 2: Convert to fraction form
    9,912.80/14,877.60 = 4,073.60/x
  3. Step 3: Cross multiply
    9,912.80x = 14,877.60 × 4,073.60
  4. Step 4: Simplify right side
    9,912.80x = 60,605,391.36
  5. Step 5: Solve for x
    x = 60,605,391.36/9,912.80
  6. Step 6: Final answer
    x = 6,113.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.