Home / 6,615.91-9,130.68-3,783.55

Finding the Fourth Proportional to 6,615.91, 9,130.68 and 3,783.55

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Solution

The fourth proportional to 6,615.91, 9,130.68 and 3,783.55 is: 5,221.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.91 : 9,130.68 = 3,783.55 : x
  2. Step 2: Convert to fraction form
    6,615.91/9,130.68 = 3,783.55/x
  3. Step 3: Cross multiply
    6,615.91x = 9,130.68 × 3,783.55
  4. Step 4: Simplify right side
    6,615.91x = 34,546,369.00
  5. Step 5: Solve for x
    x = 34,546,369.00/6,615.91
  6. Step 6: Final answer
    x = 5,221.71

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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.