Home / 7,145.08-9,860.30-4,119.50

Finding the Fourth Proportional to 7,145.08, 9,860.30 and 4,119.50

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Solution

The fourth proportional to 7,145.08, 9,860.30 and 4,119.50 is: 5,684.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.08 : 9,860.30 = 4,119.50 : x
  2. Step 2: Convert to fraction form
    7,145.08/9,860.30 = 4,119.50/x
  3. Step 3: Cross multiply
    7,145.08x = 9,860.30 × 4,119.50
  4. Step 4: Simplify right side
    7,145.08x = 40,619,505.85
  5. Step 5: Solve for x
    x = 40,619,505.85/7,145.08
  6. Step 6: Final answer
    x = 5,684.96

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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.