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Finding the Fourth Proportional to 8,809.46, 12,157.07 and 4,830.64

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Solution

The fourth proportional to 8,809.46, 12,157.07 and 4,830.64 is: 6,666.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,809.46 : 12,157.07 = 4,830.64 : x
  2. Step 2: Convert to fraction form
    8,809.46/12,157.07 = 4,830.64/x
  3. Step 3: Cross multiply
    8,809.46x = 12,157.07 × 4,830.64
  4. Step 4: Simplify right side
    8,809.46x = 58,726,428.62
  5. Step 5: Solve for x
    x = 58,726,428.62/8,809.46
  6. Step 6: Final answer
    x = 6,666.29

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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.