Home / 6,615.16-9,128.88-3,631.04

Finding the Fourth Proportional to 6,615.16, 9,128.88 and 3,631.04

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Solution

The fourth proportional to 6,615.16, 9,128.88 and 3,631.04 is: 5,010.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,615.16 : 9,128.88 = 3,631.04 : x
  2. Step 2: Convert to fraction form
    6,615.16/9,128.88 = 3,631.04/x
  3. Step 3: Cross multiply
    6,615.16x = 9,128.88 × 3,631.04
  4. Step 4: Simplify right side
    6,615.16x = 33,147,328.44
  5. Step 5: Solve for x
    x = 33,147,328.44/6,615.16
  6. Step 6: Final answer
    x = 5,010.81

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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.