Home / 7,110.30-10,665.45-3,999.90

Finding the Fourth Proportional to 7,110.30, 10,665.45 and 3,999.90

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Solution

The fourth proportional to 7,110.30, 10,665.45 and 3,999.90 is: 5,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,110.30 : 10,665.45 = 3,999.90 : x
  2. Step 2: Convert to fraction form
    7,110.30/10,665.45 = 3,999.90/x
  3. Step 3: Cross multiply
    7,110.30x = 10,665.45 × 3,999.90
  4. Step 4: Simplify right side
    7,110.30x = 42,660,733.46
  5. Step 5: Solve for x
    x = 42,660,733.46/7,110.30
  6. Step 6: Final answer
    x = 5,999.85

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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.