Home / 3,821.52-5,276.92-2,875.68

Finding the Fourth Proportional to 3,821.52, 5,276.92 and 2,875.68

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Solution

The fourth proportional to 3,821.52, 5,276.92 and 2,875.68 is: 3,970.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,821.52 : 5,276.92 = 2,875.68 : x
  2. Step 2: Convert to fraction form
    3,821.52/5,276.92 = 2,875.68/x
  3. Step 3: Cross multiply
    3,821.52x = 5,276.92 × 2,875.68
  4. Step 4: Simplify right side
    3,821.52x = 15,174,733.31
  5. Step 5: Solve for x
    x = 15,174,733.31/3,821.52
  6. Step 6: Final answer
    x = 3,970.86

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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.