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Finding the Fourth Proportional to 8,592.40, 12,898.20 and 8,028.40

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Solution

The fourth proportional to 8,592.40, 12,898.20 and 8,028.40 is: 12,051.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,592.40 : 12,898.20 = 8,028.40 : x
  2. Step 2: Convert to fraction form
    8,592.40/12,898.20 = 8,028.40/x
  3. Step 3: Cross multiply
    8,592.40x = 12,898.20 × 8,028.40
  4. Step 4: Simplify right side
    8,592.40x = 103,551,908.88
  5. Step 5: Solve for x
    x = 103,551,908.88/8,592.40
  6. Step 6: Final answer
    x = 12,051.57

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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.