Home / 6,645.20-9,168.72-4,284.50

Finding the Fourth Proportional to 6,645.20, 9,168.72 and 4,284.50

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Solution

The fourth proportional to 6,645.20, 9,168.72 and 4,284.50 is: 5,911.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.20 : 9,168.72 = 4,284.50 : x
  2. Step 2: Convert to fraction form
    6,645.20/9,168.72 = 4,284.50/x
  3. Step 3: Cross multiply
    6,645.20x = 9,168.72 × 4,284.50
  4. Step 4: Simplify right side
    6,645.20x = 39,283,380.84
  5. Step 5: Solve for x
    x = 39,283,380.84/6,645.20
  6. Step 6: Final answer
    x = 5,911.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.