Home / 7,999.20-11,037.78-4,642.29

Finding the Fourth Proportional to 7,999.20, 11,037.78 and 4,642.29

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Solution

The fourth proportional to 7,999.20, 11,037.78 and 4,642.29 is: 6,405.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.20 : 11,037.78 = 4,642.29 : x
  2. Step 2: Convert to fraction form
    7,999.20/11,037.78 = 4,642.29/x
  3. Step 3: Cross multiply
    7,999.20x = 11,037.78 × 4,642.29
  4. Step 4: Simplify right side
    7,999.20x = 51,240,575.72
  5. Step 5: Solve for x
    x = 51,240,575.72/7,999.20
  6. Step 6: Final answer
    x = 6,405.71

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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.