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Finding the Fourth Proportional to 3,550.17, 4,899.30 and 1,978.32

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Solution

The fourth proportional to 3,550.17, 4,899.30 and 1,978.32 is: 2,730.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,550.17 : 4,899.30 = 1,978.32 : x
  2. Step 2: Convert to fraction form
    3,550.17/4,899.30 = 1,978.32/x
  3. Step 3: Cross multiply
    3,550.17x = 4,899.30 × 1,978.32
  4. Step 4: Simplify right side
    3,550.17x = 9,692,383.18
  5. Step 5: Solve for x
    x = 9,692,383.18/3,550.17
  6. Step 6: Final answer
    x = 2,730.12

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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.