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Finding the Fourth Proportional to 10,812.76, 16,219.12 and 2,604.76

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Solution

The fourth proportional to 10,812.76, 16,219.12 and 2,604.76 is: 3,907.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.76 : 16,219.12 = 2,604.76 : x
  2. Step 2: Convert to fraction form
    10,812.76/16,219.12 = 2,604.76/x
  3. Step 3: Cross multiply
    10,812.76x = 16,219.12 × 2,604.76
  4. Step 4: Simplify right side
    10,812.76x = 42,246,915.01
  5. Step 5: Solve for x
    x = 42,246,915.01/10,812.76
  6. Step 6: Final answer
    x = 3,907.14

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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.