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Finding the Fourth Proportional to 7,542.80, 10,409.04 and 4,185.52

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Solution

The fourth proportional to 7,542.80, 10,409.04 and 4,185.52 is: 5,776.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,542.80 : 10,409.04 = 4,185.52 : x
  2. Step 2: Convert to fraction form
    7,542.80/10,409.04 = 4,185.52/x
  3. Step 3: Cross multiply
    7,542.80x = 10,409.04 × 4,185.52
  4. Step 4: Simplify right side
    7,542.80x = 43,567,245.10
  5. Step 5: Solve for x
    x = 43,567,245.10/7,542.80
  6. Step 6: Final answer
    x = 5,776.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.