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Finding the Fourth Proportional to 8,484.90, 12,739.00 and 4,327.71

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Solution

The fourth proportional to 8,484.90, 12,739.00 and 4,327.71 is: 6,497.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,484.90 : 12,739.00 = 4,327.71 : x
  2. Step 2: Convert to fraction form
    8,484.90/12,739.00 = 4,327.71/x
  3. Step 3: Cross multiply
    8,484.90x = 12,739.00 × 4,327.71
  4. Step 4: Simplify right side
    8,484.90x = 55,130,750.87
  5. Step 5: Solve for x
    x = 55,130,750.87/8,484.90
  6. Step 6: Final answer
    x = 6,497.51

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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.