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Finding the Fourth Proportional to 7,165.76, 10,745.76 and 2,485.04

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Solution

The fourth proportional to 7,165.76, 10,745.76 and 2,485.04 is: 3,726.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,165.76 : 10,745.76 = 2,485.04 : x
  2. Step 2: Convert to fraction form
    7,165.76/10,745.76 = 2,485.04/x
  3. Step 3: Cross multiply
    7,165.76x = 10,745.76 × 2,485.04
  4. Step 4: Simplify right side
    7,165.76x = 26,703,643.43
  5. Step 5: Solve for x
    x = 26,703,643.43/7,165.76
  6. Step 6: Final answer
    x = 3,726.56

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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.