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Finding the Fourth Proportional to 7,663.60, 11,492.70 and 3,505.60

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Solution

The fourth proportional to 7,663.60, 11,492.70 and 3,505.60 is: 5,257.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,663.60 : 11,492.70 = 3,505.60 : x
  2. Step 2: Convert to fraction form
    7,663.60/11,492.70 = 3,505.60/x
  3. Step 3: Cross multiply
    7,663.60x = 11,492.70 × 3,505.60
  4. Step 4: Simplify right side
    7,663.60x = 40,288,809.12
  5. Step 5: Solve for x
    x = 40,288,809.12/7,663.60
  6. Step 6: Final answer
    x = 5,257.16

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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.