Home / 5,415.50-7,469.88-3,319.76

Finding the Fourth Proportional to 5,415.50, 7,469.88 and 3,319.76

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Solution

The fourth proportional to 5,415.50, 7,469.88 and 3,319.76 is: 4,579.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,415.50 : 7,469.88 = 3,319.76 : x
  2. Step 2: Convert to fraction form
    5,415.50/7,469.88 = 3,319.76/x
  3. Step 3: Cross multiply
    5,415.50x = 7,469.88 × 3,319.76
  4. Step 4: Simplify right side
    5,415.50x = 24,798,208.83
  5. Step 5: Solve for x
    x = 24,798,208.83/5,415.50
  6. Step 6: Final answer
    x = 4,579.12

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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.