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Finding the Fourth Proportional to 3,160.92, 4,741.50 and 1,518.84

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Solution

The fourth proportional to 3,160.92, 4,741.50 and 1,518.84 is: 2,278.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.92 : 4,741.50 = 1,518.84 : x
  2. Step 2: Convert to fraction form
    3,160.92/4,741.50 = 1,518.84/x
  3. Step 3: Cross multiply
    3,160.92x = 4,741.50 × 1,518.84
  4. Step 4: Simplify right side
    3,160.92x = 7,201,579.86
  5. Step 5: Solve for x
    x = 7,201,579.86/3,160.92
  6. Step 6: Final answer
    x = 2,278.32

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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.