Home / 3,828.20-5,275.01-2,931.89

Finding the Fourth Proportional to 3,828.20, 5,275.01 and 2,931.89

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Solution

The fourth proportional to 3,828.20, 5,275.01 and 2,931.89 is: 4,039.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.20 : 5,275.01 = 2,931.89 : x
  2. Step 2: Convert to fraction form
    3,828.20/5,275.01 = 2,931.89/x
  3. Step 3: Cross multiply
    3,828.20x = 5,275.01 × 2,931.89
  4. Step 4: Simplify right side
    3,828.20x = 15,465,743.21
  5. Step 5: Solve for x
    x = 15,465,743.21/3,828.20
  6. Step 6: Final answer
    x = 4,039.95

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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.