Home / 3,125.36-4,305.48-2,900.72

Finding the Fourth Proportional to 3,125.36, 4,305.48 and 2,900.72

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Solution

The fourth proportional to 3,125.36, 4,305.48 and 2,900.72 is: 3,996.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.36 : 4,305.48 = 2,900.72 : x
  2. Step 2: Convert to fraction form
    3,125.36/4,305.48 = 2,900.72/x
  3. Step 3: Cross multiply
    3,125.36x = 4,305.48 × 2,900.72
  4. Step 4: Simplify right side
    3,125.36x = 12,488,991.95
  5. Step 5: Solve for x
    x = 12,488,991.95/3,125.36
  6. Step 6: Final answer
    x = 3,996.02

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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.