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Finding the Fourth Proportional to 7,410.60, 11,099.70 and 6,589.80

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Solution

The fourth proportional to 7,410.60, 11,099.70 and 6,589.80 is: 9,870.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,410.60 : 11,099.70 = 6,589.80 : x
  2. Step 2: Convert to fraction form
    7,410.60/11,099.70 = 6,589.80/x
  3. Step 3: Cross multiply
    7,410.60x = 11,099.70 × 6,589.80
  4. Step 4: Simplify right side
    7,410.60x = 73,144,803.06
  5. Step 5: Solve for x
    x = 73,144,803.06/7,410.60
  6. Step 6: Final answer
    x = 9,870.29

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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.