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Finding the Fourth Proportional to 7,985.54, 11,980.47 and 4,525.22

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Solution

The fourth proportional to 7,985.54, 11,980.47 and 4,525.22 is: 6,789.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,985.54 : 11,980.47 = 4,525.22 : x
  2. Step 2: Convert to fraction form
    7,985.54/11,980.47 = 4,525.22/x
  3. Step 3: Cross multiply
    7,985.54x = 11,980.47 × 4,525.22
  4. Step 4: Simplify right side
    7,985.54x = 54,214,262.45
  5. Step 5: Solve for x
    x = 54,214,262.45/7,985.54
  6. Step 6: Final answer
    x = 6,789.05

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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.