Home / 2,572.80-3,858.24-1,339.68

Finding the Fourth Proportional to 2,572.80, 3,858.24 and 1,339.68

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Solution

The fourth proportional to 2,572.80, 3,858.24 and 1,339.68 is: 2,009.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,572.80 : 3,858.24 = 1,339.68 : x
  2. Step 2: Convert to fraction form
    2,572.80/3,858.24 = 1,339.68/x
  3. Step 3: Cross multiply
    2,572.80x = 3,858.24 × 1,339.68
  4. Step 4: Simplify right side
    2,572.80x = 5,168,806.96
  5. Step 5: Solve for x
    x = 5,168,806.96/2,572.80
  6. Step 6: Final answer
    x = 2,009.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.