Home / 7,180.12-9,909.03-4,155.85

Finding the Fourth Proportional to 7,180.12, 9,909.03 and 4,155.85

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Solution

The fourth proportional to 7,180.12, 9,909.03 and 4,155.85 is: 5,735.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.12 : 9,909.03 = 4,155.85 : x
  2. Step 2: Convert to fraction form
    7,180.12/9,909.03 = 4,155.85/x
  3. Step 3: Cross multiply
    7,180.12x = 9,909.03 × 4,155.85
  4. Step 4: Simplify right side
    7,180.12x = 41,180,442.33
  5. Step 5: Solve for x
    x = 41,180,442.33/7,180.12
  6. Step 6: Final answer
    x = 5,735.34

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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.