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Finding the Fourth Proportional to 7,383.60, 10,203.12 and 5,709.60

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Solution

The fourth proportional to 7,383.60, 10,203.12 and 5,709.60 is: 7,889.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,383.60 : 10,203.12 = 5,709.60 : x
  2. Step 2: Convert to fraction form
    7,383.60/10,203.12 = 5,709.60/x
  3. Step 3: Cross multiply
    7,383.60x = 10,203.12 × 5,709.60
  4. Step 4: Simplify right side
    7,383.60x = 58,255,733.95
  5. Step 5: Solve for x
    x = 58,255,733.95/7,383.60
  6. Step 6: Final answer
    x = 7,889.88

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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.