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Finding the Fourth Proportional to 9,128.79, 13,693.20 and 2,203.29

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Solution

The fourth proportional to 9,128.79, 13,693.20 and 2,203.29 is: 3,304.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,128.79 : 13,693.20 = 2,203.29 : x
  2. Step 2: Convert to fraction form
    9,128.79/13,693.20 = 2,203.29/x
  3. Step 3: Cross multiply
    9,128.79x = 13,693.20 × 2,203.29
  4. Step 4: Simplify right side
    9,128.79x = 30,170,090.63
  5. Step 5: Solve for x
    x = 30,170,090.63/9,128.79
  6. Step 6: Final answer
    x = 3,304.94

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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.