Home / 6,985.30-9,636.98-3,999.54

Finding the Fourth Proportional to 6,985.30, 9,636.98 and 3,999.54

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Solution

The fourth proportional to 6,985.30, 9,636.98 and 3,999.54 is: 5,517.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,985.30 : 9,636.98 = 3,999.54 : x
  2. Step 2: Convert to fraction form
    6,985.30/9,636.98 = 3,999.54/x
  3. Step 3: Cross multiply
    6,985.30x = 9,636.98 × 3,999.54
  4. Step 4: Simplify right side
    6,985.30x = 38,543,486.99
  5. Step 5: Solve for x
    x = 38,543,486.99/6,985.30
  6. Step 6: Final answer
    x = 5,517.80

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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.