Home / 7,890.12-11,827.19-5,118.55

Finding the Fourth Proportional to 7,890.12, 11,827.19 and 5,118.55

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Solution

The fourth proportional to 7,890.12, 11,827.19 and 5,118.55 is: 7,672.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.12 : 11,827.19 = 5,118.55 : x
  2. Step 2: Convert to fraction form
    7,890.12/11,827.19 = 5,118.55/x
  3. Step 3: Cross multiply
    7,890.12x = 11,827.19 × 5,118.55
  4. Step 4: Simplify right side
    7,890.12x = 60,538,063.37
  5. Step 5: Solve for x
    x = 60,538,063.37/7,890.12
  6. Step 6: Final answer
    x = 7,672.64

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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.