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Finding the Fourth Proportional to 5,579.60, 8,369.40 and 4,744.40

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Solution

The fourth proportional to 5,579.60, 8,369.40 and 4,744.40 is: 7,116.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,579.60 : 8,369.40 = 4,744.40 : x
  2. Step 2: Convert to fraction form
    5,579.60/8,369.40 = 4,744.40/x
  3. Step 3: Cross multiply
    5,579.60x = 8,369.40 × 4,744.40
  4. Step 4: Simplify right side
    5,579.60x = 39,707,781.36
  5. Step 5: Solve for x
    x = 39,707,781.36/5,579.60
  6. Step 6: Final answer
    x = 7,116.60

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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.