Home / 7,147.80-10,730.88-5,505.48

Finding the Fourth Proportional to 7,147.80, 10,730.88 and 5,505.48

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Solution

The fourth proportional to 7,147.80, 10,730.88 and 5,505.48 is: 8,265.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,147.80 : 10,730.88 = 5,505.48 : x
  2. Step 2: Convert to fraction form
    7,147.80/10,730.88 = 5,505.48/x
  3. Step 3: Cross multiply
    7,147.80x = 10,730.88 × 5,505.48
  4. Step 4: Simplify right side
    7,147.80x = 59,078,645.22
  5. Step 5: Solve for x
    x = 59,078,645.22/7,147.80
  6. Step 6: Final answer
    x = 8,265.29

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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.