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Finding the Fourth Proportional to 7,299.60, 10,954.80 and 2,920.20

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Solution

The fourth proportional to 7,299.60, 10,954.80 and 2,920.20 is: 4,382.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,299.60 : 10,954.80 = 2,920.20 : x
  2. Step 2: Convert to fraction form
    7,299.60/10,954.80 = 2,920.20/x
  3. Step 3: Cross multiply
    7,299.60x = 10,954.80 × 2,920.20
  4. Step 4: Simplify right side
    7,299.60x = 31,990,206.96
  5. Step 5: Solve for x
    x = 31,990,206.96/7,299.60
  6. Step 6: Final answer
    x = 4,382.46

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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.