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Finding the Fourth Proportional to 8,605.08, 11,875.50 and 6,505.56

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Solution

The fourth proportional to 8,605.08, 11,875.50 and 6,505.56 is: 8,978.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.08 : 11,875.50 = 6,505.56 : x
  2. Step 2: Convert to fraction form
    8,605.08/11,875.50 = 6,505.56/x
  3. Step 3: Cross multiply
    8,605.08x = 11,875.50 × 6,505.56
  4. Step 4: Simplify right side
    8,605.08x = 77,256,777.78
  5. Step 5: Solve for x
    x = 77,256,777.78/8,605.08
  6. Step 6: Final answer
    x = 8,978.04

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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.