Home / 7,980.12-11,012.97-4,622.35

Finding the Fourth Proportional to 7,980.12, 11,012.97 and 4,622.35

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Solution

The fourth proportional to 7,980.12, 11,012.97 and 4,622.35 is: 6,379.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.12 : 11,012.97 = 4,622.35 : x
  2. Step 2: Convert to fraction form
    7,980.12/11,012.97 = 4,622.35/x
  3. Step 3: Cross multiply
    7,980.12x = 11,012.97 × 4,622.35
  4. Step 4: Simplify right side
    7,980.12x = 50,905,801.88
  5. Step 5: Solve for x
    x = 50,905,801.88/7,980.12
  6. Step 6: Final answer
    x = 6,379.08

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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.