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Finding the Fourth Proportional to 8,913.36, 13,369.50 and 2,339.55

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Solution

The fourth proportional to 8,913.36, 13,369.50 and 2,339.55 is: 3,509.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,913.36 : 13,369.50 = 2,339.55 : x
  2. Step 2: Convert to fraction form
    8,913.36/13,369.50 = 2,339.55/x
  3. Step 3: Cross multiply
    8,913.36x = 13,369.50 × 2,339.55
  4. Step 4: Simplify right side
    8,913.36x = 31,278,613.73
  5. Step 5: Solve for x
    x = 31,278,613.73/8,913.36
  6. Step 6: Final answer
    x = 3,509.18

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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.