Home / 3,651.39-5,038.92-2,159.28

Finding the Fourth Proportional to 3,651.39, 5,038.92 and 2,159.28

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Solution

The fourth proportional to 3,651.39, 5,038.92 and 2,159.28 is: 2,979.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,651.39 : 5,038.92 = 2,159.28 : x
  2. Step 2: Convert to fraction form
    3,651.39/5,038.92 = 2,159.28/x
  3. Step 3: Cross multiply
    3,651.39x = 5,038.92 × 2,159.28
  4. Step 4: Simplify right side
    3,651.39x = 10,880,439.18
  5. Step 5: Solve for x
    x = 10,880,439.18/3,651.39
  6. Step 6: Final answer
    x = 2,979.81

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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.