Home / 7,999.85-11,036.81-4,640.78

Finding the Fourth Proportional to 7,999.85, 11,036.81 and 4,640.78

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Solution

The fourth proportional to 7,999.85, 11,036.81 and 4,640.78 is: 6,402.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.85 : 11,036.81 = 4,640.78 : x
  2. Step 2: Convert to fraction form
    7,999.85/11,036.81 = 4,640.78/x
  3. Step 3: Cross multiply
    7,999.85x = 11,036.81 × 4,640.78
  4. Step 4: Simplify right side
    7,999.85x = 51,219,446.31
  5. Step 5: Solve for x
    x = 51,219,446.31/7,999.85
  6. Step 6: Final answer
    x = 6,402.55

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Similar ratio
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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.