Home / 7,645.55-11,458.60-4,178.75

Finding the Fourth Proportional to 7,645.55, 11,458.60 and 4,178.75

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Solution

The fourth proportional to 7,645.55, 11,458.60 and 4,178.75 is: 6,262.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,645.55 : 11,458.60 = 4,178.75 : x
  2. Step 2: Convert to fraction form
    7,645.55/11,458.60 = 4,178.75/x
  3. Step 3: Cross multiply
    7,645.55x = 11,458.60 × 4,178.75
  4. Step 4: Simplify right side
    7,645.55x = 47,882,557.01
  5. Step 5: Solve for x
    x = 47,882,557.01/7,645.55
  6. Step 6: Final answer
    x = 6,262.80

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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.