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Finding the Fourth Proportional to 7,665.64, 11,503.58 and 4,203.88

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Solution

The fourth proportional to 7,665.64, 11,503.58 and 4,203.88 is: 6,308.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,665.64 : 11,503.58 = 4,203.88 : x
  2. Step 2: Convert to fraction form
    7,665.64/11,503.58 = 4,203.88/x
  3. Step 3: Cross multiply
    7,665.64x = 11,503.58 × 4,203.88
  4. Step 4: Simplify right side
    7,665.64x = 48,359,669.89
  5. Step 5: Solve for x
    x = 48,359,669.89/7,665.64
  6. Step 6: Final answer
    x = 6,308.63

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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.