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Finding the Fourth Proportional to 8,965.44, 13,447.65 and 4,288.77

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Solution

The fourth proportional to 8,965.44, 13,447.65 and 4,288.77 is: 6,432.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,965.44 : 13,447.65 = 4,288.77 : x
  2. Step 2: Convert to fraction form
    8,965.44/13,447.65 = 4,288.77/x
  3. Step 3: Cross multiply
    8,965.44x = 13,447.65 × 4,288.77
  4. Step 4: Simplify right side
    8,965.44x = 57,673,877.89
  5. Step 5: Solve for x
    x = 57,673,877.89/8,965.44
  6. Step 6: Final answer
    x = 6,432.91

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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.