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Finding the Fourth Proportional to 8,919.73, 12,297.22 and 7,655.32

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Solution

The fourth proportional to 8,919.73, 12,297.22 and 7,655.32 is: 10,554.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.73 : 12,297.22 = 7,655.32 : x
  2. Step 2: Convert to fraction form
    8,919.73/12,297.22 = 7,655.32/x
  3. Step 3: Cross multiply
    8,919.73x = 12,297.22 × 7,655.32
  4. Step 4: Simplify right side
    8,919.73x = 94,139,154.21
  5. Step 5: Solve for x
    x = 94,139,154.21/8,919.73
  6. Step 6: Final answer
    x = 10,554.04

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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.