Home / 7,485.20-11,227.20-5,645.72

Finding the Fourth Proportional to 7,485.20, 11,227.20 and 5,645.72

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Solution

The fourth proportional to 7,485.20, 11,227.20 and 5,645.72 is: 8,468.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,485.20 : 11,227.20 = 5,645.72 : x
  2. Step 2: Convert to fraction form
    7,485.20/11,227.20 = 5,645.72/x
  3. Step 3: Cross multiply
    7,485.20x = 11,227.20 × 5,645.72
  4. Step 4: Simplify right side
    7,485.20x = 63,385,627.58
  5. Step 5: Solve for x
    x = 63,385,627.58/7,485.20
  6. Step 6: Final answer
    x = 8,468.13

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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.