Home / 3,119.60-4,305.39-1,775.51

Finding the Fourth Proportional to 3,119.60, 4,305.39 and 1,775.51

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Solution

The fourth proportional to 3,119.60, 4,305.39 and 1,775.51 is: 2,450.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.60 : 4,305.39 = 1,775.51 : x
  2. Step 2: Convert to fraction form
    3,119.60/4,305.39 = 1,775.51/x
  3. Step 3: Cross multiply
    3,119.60x = 4,305.39 × 1,775.51
  4. Step 4: Simplify right side
    3,119.60x = 7,644,263.00
  5. Step 5: Solve for x
    x = 7,644,263.00/3,119.60
  6. Step 6: Final answer
    x = 2,450.40

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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.