Home / 7,950.20-11,925.55-3,999.30

Finding the Fourth Proportional to 7,950.20, 11,925.55 and 3,999.30

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Solution

The fourth proportional to 7,950.20, 11,925.55 and 3,999.30 is: 5,999.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,950.20 : 11,925.55 = 3,999.30 : x
  2. Step 2: Convert to fraction form
    7,950.20/11,925.55 = 3,999.30/x
  3. Step 3: Cross multiply
    7,950.20x = 11,925.55 × 3,999.30
  4. Step 4: Simplify right side
    7,950.20x = 47,693,852.12
  5. Step 5: Solve for x
    x = 47,693,852.12/7,950.20
  6. Step 6: Final answer
    x = 5,999.08

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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.