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Finding the Fourth Proportional to 4,689.39, 6,473.35 and 2,921.87

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Solution

The fourth proportional to 4,689.39, 6,473.35 and 2,921.87 is: 4,033.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.39 : 6,473.35 = 2,921.87 : x
  2. Step 2: Convert to fraction form
    4,689.39/6,473.35 = 2,921.87/x
  3. Step 3: Cross multiply
    4,689.39x = 6,473.35 × 2,921.87
  4. Step 4: Simplify right side
    4,689.39x = 18,914,242.01
  5. Step 5: Solve for x
    x = 18,914,242.01/4,689.39
  6. Step 6: Final answer
    x = 4,033.42

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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.