Home / 6,387.20-9,588.60-3,615.80

Finding the Fourth Proportional to 6,387.20, 9,588.60 and 3,615.80

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Solution

The fourth proportional to 6,387.20, 9,588.60 and 3,615.80 is: 5,428.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,387.20 : 9,588.60 = 3,615.80 : x
  2. Step 2: Convert to fraction form
    6,387.20/9,588.60 = 3,615.80/x
  3. Step 3: Cross multiply
    6,387.20x = 9,588.60 × 3,615.80
  4. Step 4: Simplify right side
    6,387.20x = 34,670,459.88
  5. Step 5: Solve for x
    x = 34,670,459.88/6,387.20
  6. Step 6: Final answer
    x = 5,428.12

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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.