Home / 7,630.74-11,449.40-4,120.05

Finding the Fourth Proportional to 7,630.74, 11,449.40 and 4,120.05

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Solution

The fourth proportional to 7,630.74, 11,449.40 and 4,120.05 is: 6,181.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,630.74 : 11,449.40 = 4,120.05 : x
  2. Step 2: Convert to fraction form
    7,630.74/11,449.40 = 4,120.05/x
  3. Step 3: Cross multiply
    7,630.74x = 11,449.40 × 4,120.05
  4. Step 4: Simplify right side
    7,630.74x = 47,172,110.77
  5. Step 5: Solve for x
    x = 47,172,110.77/7,630.74
  6. Step 6: Final answer
    x = 6,181.85

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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.