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Finding the Fourth Proportional to 1,492.10, 2,059.06 and 819.92

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Solution

The fourth proportional to 1,492.10, 2,059.06 and 819.92 is: 1,131.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,492.10 : 2,059.06 = 819.92 : x
  2. Step 2: Convert to fraction form
    1,492.10/2,059.06 = 819.92/x
  3. Step 3: Cross multiply
    1,492.10x = 2,059.06 × 819.92
  4. Step 4: Simplify right side
    1,492.10x = 1,688,260.12
  5. Step 5: Solve for x
    x = 1,688,260.12/1,492.10
  6. Step 6: Final answer
    x = 1,131.47

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.