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Finding the Fourth Proportional to 8,655.34, 11,949.17 and 5,675.55

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Solution

The fourth proportional to 8,655.34, 11,949.17 and 5,675.55 is: 7,835.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,655.34 : 11,949.17 = 5,675.55 : x
  2. Step 2: Convert to fraction form
    8,655.34/11,949.17 = 5,675.55/x
  3. Step 3: Cross multiply
    8,655.34x = 11,949.17 × 5,675.55
  4. Step 4: Simplify right side
    8,655.34x = 67,818,155.86
  5. Step 5: Solve for x
    x = 67,818,155.86/8,655.34
  6. Step 6: Final answer
    x = 7,835.41

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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.