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Finding the Fourth Proportional to 8,919.77, 13,374.88 and 8,536.37

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Solution

The fourth proportional to 8,919.77, 13,374.88 and 8,536.37 is: 12,799.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.77 : 13,374.88 = 8,536.37 : x
  2. Step 2: Convert to fraction form
    8,919.77/13,374.88 = 8,536.37/x
  3. Step 3: Cross multiply
    8,919.77x = 13,374.88 × 8,536.37
  4. Step 4: Simplify right side
    8,919.77x = 114,172,836.17
  5. Step 5: Solve for x
    x = 114,172,836.17/8,919.77
  6. Step 6: Final answer
    x = 12,799.98

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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.