Home / 4,615.04-6,912.96-3,129.60

Finding the Fourth Proportional to 4,615.04, 6,912.96 and 3,129.60

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Solution

The fourth proportional to 4,615.04, 6,912.96 and 3,129.60 is: 4,687.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,615.04 : 6,912.96 = 3,129.60 : x
  2. Step 2: Convert to fraction form
    4,615.04/6,912.96 = 3,129.60/x
  3. Step 3: Cross multiply
    4,615.04x = 6,912.96 × 3,129.60
  4. Step 4: Simplify right side
    4,615.04x = 21,634,799.62
  5. Step 5: Solve for x
    x = 21,634,799.62/4,615.04
  6. Step 6: Final answer
    x = 4,687.89

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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.