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Finding the Fourth Proportional to 8,317.28, 12,492.08 and 8,012.72

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Solution

The fourth proportional to 8,317.28, 12,492.08 and 8,012.72 is: 12,034.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,317.28 : 12,492.08 = 8,012.72 : x
  2. Step 2: Convert to fraction form
    8,317.28/12,492.08 = 8,012.72/x
  3. Step 3: Cross multiply
    8,317.28x = 12,492.08 × 8,012.72
  4. Step 4: Simplify right side
    8,317.28x = 100,095,539.26
  5. Step 5: Solve for x
    x = 100,095,539.26/8,317.28
  6. Step 6: Final answer
    x = 12,034.65

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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.