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Finding the Fourth Proportional to 8,585.66, 12,879.96 and 3,655.34

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Solution

The fourth proportional to 8,585.66, 12,879.96 and 3,655.34 is: 5,483.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,585.66 : 12,879.96 = 3,655.34 : x
  2. Step 2: Convert to fraction form
    8,585.66/12,879.96 = 3,655.34/x
  3. Step 3: Cross multiply
    8,585.66x = 12,879.96 × 3,655.34
  4. Step 4: Simplify right side
    8,585.66x = 47,080,632.99
  5. Step 5: Solve for x
    x = 47,080,632.99/8,585.66
  6. Step 6: Final answer
    x = 5,483.64

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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.