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Finding the Fourth Proportional to 8,919.55, 13,375.44 and 4,758.63

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Solution

The fourth proportional to 8,919.55, 13,375.44 and 4,758.63 is: 7,135.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.55 : 13,375.44 = 4,758.63 : x
  2. Step 2: Convert to fraction form
    8,919.55/13,375.44 = 4,758.63/x
  3. Step 3: Cross multiply
    8,919.55x = 13,375.44 × 4,758.63
  4. Step 4: Simplify right side
    8,919.55x = 63,648,703.17
  5. Step 5: Solve for x
    x = 63,648,703.17/8,919.55
  6. Step 6: Final answer
    x = 7,135.87

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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.