Home / 3,838.71-5,296.74-2,160.19

Finding the Fourth Proportional to 3,838.71, 5,296.74 and 2,160.19

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Solution

The fourth proportional to 3,838.71, 5,296.74 and 2,160.19 is: 2,980.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,838.71 : 5,296.74 = 2,160.19 : x
  2. Step 2: Convert to fraction form
    3,838.71/5,296.74 = 2,160.19/x
  3. Step 3: Cross multiply
    3,838.71x = 5,296.74 × 2,160.19
  4. Step 4: Simplify right side
    3,838.71x = 11,441,964.78
  5. Step 5: Solve for x
    x = 11,441,964.78/3,838.71
  6. Step 6: Final answer
    x = 2,980.68

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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.