Home / 3,220.09-4,830.26-999.15

Finding the Fourth Proportional to 3,220.09, 4,830.26 and 999.15

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Solution

The fourth proportional to 3,220.09, 4,830.26 and 999.15 is: 1,498.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,220.09 : 4,830.26 = 999.15 : x
  2. Step 2: Convert to fraction form
    3,220.09/4,830.26 = 999.15/x
  3. Step 3: Cross multiply
    3,220.09x = 4,830.26 × 999.15
  4. Step 4: Simplify right side
    3,220.09x = 4,826,131.17
  5. Step 5: Solve for x
    x = 4,826,131.17/3,220.09
  6. Step 6: Final answer
    x = 1,498.76

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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.