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Finding the Fourth Proportional to 8,668.55, 12,993.71 and 4,276.95

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Solution

The fourth proportional to 8,668.55, 12,993.71 and 4,276.95 is: 6,410.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.55 : 12,993.71 = 4,276.95 : x
  2. Step 2: Convert to fraction form
    8,668.55/12,993.71 = 4,276.95/x
  3. Step 3: Cross multiply
    8,668.55x = 12,993.71 × 4,276.95
  4. Step 4: Simplify right side
    8,668.55x = 55,573,426.60
  5. Step 5: Solve for x
    x = 55,573,426.60/8,668.55
  6. Step 6: Final answer
    x = 6,410.93

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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.