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Finding the Fourth Proportional to 8,453.60, 11,655.12 and 6,935.60

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Solution

The fourth proportional to 8,453.60, 11,655.12 and 6,935.60 is: 9,562.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,453.60 : 11,655.12 = 6,935.60 : x
  2. Step 2: Convert to fraction form
    8,453.60/11,655.12 = 6,935.60/x
  3. Step 3: Cross multiply
    8,453.60x = 11,655.12 × 6,935.60
  4. Step 4: Simplify right side
    8,453.60x = 80,835,250.27
  5. Step 5: Solve for x
    x = 80,835,250.27/8,453.60
  6. Step 6: Final answer
    x = 9,562.23

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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.