Home / 7,645.68-11,471.76-4,178.88

Finding the Fourth Proportional to 7,645.68, 11,471.76 and 4,178.88

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Solution

The fourth proportional to 7,645.68, 11,471.76 and 4,178.88 is: 6,270.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,645.68 : 11,471.76 = 4,178.88 : x
  2. Step 2: Convert to fraction form
    7,645.68/11,471.76 = 4,178.88/x
  3. Step 3: Cross multiply
    7,645.68x = 11,471.76 × 4,178.88
  4. Step 4: Simplify right side
    7,645.68x = 47,939,108.43
  5. Step 5: Solve for x
    x = 47,939,108.43/7,645.68
  6. Step 6: Final answer
    x = 6,270.09

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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.