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Finding the Fourth Proportional to 11,503.28, 17,255.28 and 3,712.88

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Solution

The fourth proportional to 11,503.28, 17,255.28 and 3,712.88 is: 5,569.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,503.28 : 17,255.28 = 3,712.88 : x
  2. Step 2: Convert to fraction form
    11,503.28/17,255.28 = 3,712.88/x
  3. Step 3: Cross multiply
    11,503.28x = 17,255.28 × 3,712.88
  4. Step 4: Simplify right side
    11,503.28x = 64,066,784.01
  5. Step 5: Solve for x
    x = 64,066,784.01/11,503.28
  6. Step 6: Final answer
    x = 5,569.44

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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.