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Finding the Fourth Proportional to 7,492.80, 11,230.20 and 5,152.80

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Solution

The fourth proportional to 7,492.80, 11,230.20 and 5,152.80 is: 7,723.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,492.80 : 11,230.20 = 5,152.80 : x
  2. Step 2: Convert to fraction form
    7,492.80/11,230.20 = 5,152.80/x
  3. Step 3: Cross multiply
    7,492.80x = 11,230.20 × 5,152.80
  4. Step 4: Simplify right side
    7,492.80x = 57,866,974.56
  5. Step 5: Solve for x
    x = 57,866,974.56/7,492.80
  6. Step 6: Final answer
    x = 7,723.01

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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.