Home / 7,965.19-10,990.99-4,379.55

Finding the Fourth Proportional to 7,965.19, 10,990.99 and 4,379.55

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Solution

The fourth proportional to 7,965.19, 10,990.99 and 4,379.55 is: 6,043.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,965.19 : 10,990.99 = 4,379.55 : x
  2. Step 2: Convert to fraction form
    7,965.19/10,990.99 = 4,379.55/x
  3. Step 3: Cross multiply
    7,965.19x = 10,990.99 × 4,379.55
  4. Step 4: Simplify right side
    7,965.19x = 48,135,590.25
  5. Step 5: Solve for x
    x = 48,135,590.25/7,965.19
  6. Step 6: Final answer
    x = 6,043.24

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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.