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Finding the Fourth Proportional to 7,751.30, 11,623.40 and 2,485.30

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Solution

The fourth proportional to 7,751.30, 11,623.40 and 2,485.30 is: 3,726.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.30 : 11,623.40 = 2,485.30 : x
  2. Step 2: Convert to fraction form
    7,751.30/11,623.40 = 2,485.30/x
  3. Step 3: Cross multiply
    7,751.30x = 11,623.40 × 2,485.30
  4. Step 4: Simplify right side
    7,751.30x = 28,887,636.02
  5. Step 5: Solve for x
    x = 28,887,636.02/7,751.30
  6. Step 6: Final answer
    x = 3,726.81

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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.