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Finding the Fourth Proportional to 6,404.60, 8,839.02 and 4,830.20

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Solution

The fourth proportional to 6,404.60, 8,839.02 and 4,830.20 is: 6,666.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,404.60 : 8,839.02 = 4,830.20 : x
  2. Step 2: Convert to fraction form
    6,404.60/8,839.02 = 4,830.20/x
  3. Step 3: Cross multiply
    6,404.60x = 8,839.02 × 4,830.20
  4. Step 4: Simplify right side
    6,404.60x = 42,694,234.40
  5. Step 5: Solve for x
    x = 42,694,234.40/6,404.60
  6. Step 6: Final answer
    x = 6,666.18

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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.