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Finding the Fourth Proportional to 7,953.60, 11,920.20 and 4,443.60

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Solution

The fourth proportional to 7,953.60, 11,920.20 and 4,443.60 is: 6,659.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,953.60 : 11,920.20 = 4,443.60 : x
  2. Step 2: Convert to fraction form
    7,953.60/11,920.20 = 4,443.60/x
  3. Step 3: Cross multiply
    7,953.60x = 11,920.20 × 4,443.60
  4. Step 4: Simplify right side
    7,953.60x = 52,968,600.72
  5. Step 5: Solve for x
    x = 52,968,600.72/7,953.60
  6. Step 6: Final answer
    x = 6,659.70

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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.