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Finding the Fourth Proportional to 8,762.84, 13,139.20 and 5,992.87

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Solution

The fourth proportional to 8,762.84, 13,139.20 and 5,992.87 is: 8,985.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,762.84 : 13,139.20 = 5,992.87 : x
  2. Step 2: Convert to fraction form
    8,762.84/13,139.20 = 5,992.87/x
  3. Step 3: Cross multiply
    8,762.84x = 13,139.20 × 5,992.87
  4. Step 4: Simplify right side
    8,762.84x = 78,741,451.81
  5. Step 5: Solve for x
    x = 78,741,451.81/8,762.84
  6. Step 6: Final answer
    x = 8,985.84

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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.