Home / 7,566.80-11,350.20-3,405.20

Finding the Fourth Proportional to 7,566.80, 11,350.20 and 3,405.20

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Solution

The fourth proportional to 7,566.80, 11,350.20 and 3,405.20 is: 5,107.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,566.80 : 11,350.20 = 3,405.20 : x
  2. Step 2: Convert to fraction form
    7,566.80/11,350.20 = 3,405.20/x
  3. Step 3: Cross multiply
    7,566.80x = 11,350.20 × 3,405.20
  4. Step 4: Simplify right side
    7,566.80x = 38,649,701.04
  5. Step 5: Solve for x
    x = 38,649,701.04/7,566.80
  6. Step 6: Final answer
    x = 5,107.80

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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.