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Finding the Fourth Proportional to 3,539.76, 4,884.72 and 1,946.28

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Solution

The fourth proportional to 3,539.76, 4,884.72 and 1,946.28 is: 2,685.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,539.76 : 4,884.72 = 1,946.28 : x
  2. Step 2: Convert to fraction form
    3,539.76/4,884.72 = 1,946.28/x
  3. Step 3: Cross multiply
    3,539.76x = 4,884.72 × 1,946.28
  4. Step 4: Simplify right side
    3,539.76x = 9,507,032.84
  5. Step 5: Solve for x
    x = 9,507,032.84/3,539.76
  6. Step 6: Final answer
    x = 2,685.78

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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.