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Finding the Fourth Proportional to 3,492.19, 4,819.29 and 1,920.29

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Solution

The fourth proportional to 3,492.19, 4,819.29 and 1,920.29 is: 2,650.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,492.19 : 4,819.29 = 1,920.29 : x
  2. Step 2: Convert to fraction form
    3,492.19/4,819.29 = 1,920.29/x
  3. Step 3: Cross multiply
    3,492.19x = 4,819.29 × 1,920.29
  4. Step 4: Simplify right side
    3,492.19x = 9,254,410.30
  5. Step 5: Solve for x
    x = 9,254,410.30/3,492.19
  6. Step 6: Final answer
    x = 2,650.03

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1.5x scale

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.