Home / 6,669.20-9,989.40-5,939.60

Finding the Fourth Proportional to 6,669.20, 9,989.40 and 5,939.60

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Solution

The fourth proportional to 6,669.20, 9,989.40 and 5,939.60 is: 8,896.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,669.20 : 9,989.40 = 5,939.60 : x
  2. Step 2: Convert to fraction form
    6,669.20/9,989.40 = 5,939.60/x
  3. Step 3: Cross multiply
    6,669.20x = 9,989.40 × 5,939.60
  4. Step 4: Simplify right side
    6,669.20x = 59,333,040.24
  5. Step 5: Solve for x
    x = 59,333,040.24/6,669.20
  6. Step 6: Final answer
    x = 8,896.58

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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.