Home / 7,999.30-12,005.48-5,661.57

Finding the Fourth Proportional to 7,999.30, 12,005.48 and 5,661.57

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Solution

The fourth proportional to 7,999.30, 12,005.48 and 5,661.57 is: 8,496.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.30 : 12,005.48 = 5,661.57 : x
  2. Step 2: Convert to fraction form
    7,999.30/12,005.48 = 5,661.57/x
  3. Step 3: Cross multiply
    7,999.30x = 12,005.48 × 5,661.57
  4. Step 4: Simplify right side
    7,999.30x = 67,969,865.40
  5. Step 5: Solve for x
    x = 67,969,865.40/7,999.30
  6. Step 6: Final answer
    x = 8,496.98

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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.