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Finding the Fourth Proportional to 3,492.78, 4,820.19 and 1,920.93

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Solution

The fourth proportional to 3,492.78, 4,820.19 and 1,920.93 is: 2,650.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,492.78 : 4,820.19 = 1,920.93 : x
  2. Step 2: Convert to fraction form
    3,492.78/4,820.19 = 1,920.93/x
  3. Step 3: Cross multiply
    3,492.78x = 4,820.19 × 1,920.93
  4. Step 4: Simplify right side
    3,492.78x = 9,259,247.58
  5. Step 5: Solve for x
    x = 9,259,247.58/3,492.78
  6. Step 6: Final answer
    x = 2,650.97

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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.