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Finding the Fourth Proportional to 8,919.52, 13,390.16 and 8,567.16

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Solution

The fourth proportional to 8,919.52, 13,390.16 and 8,567.16 is: 12,861.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.52 : 13,390.16 = 8,567.16 : x
  2. Step 2: Convert to fraction form
    8,919.52/13,390.16 = 8,567.16/x
  3. Step 3: Cross multiply
    8,919.52x = 13,390.16 × 8,567.16
  4. Step 4: Simplify right side
    8,919.52x = 114,715,643.15
  5. Step 5: Solve for x
    x = 114,715,643.15/8,919.52
  6. Step 6: Final answer
    x = 12,861.19

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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.