Home / 3,145.39-4,718.10-1,295.20

Finding the Fourth Proportional to 3,145.39, 4,718.10 and 1,295.20

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Solution

The fourth proportional to 3,145.39, 4,718.10 and 1,295.20 is: 1,942.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.39 : 4,718.10 = 1,295.20 : x
  2. Step 2: Convert to fraction form
    3,145.39/4,718.10 = 1,295.20/x
  3. Step 3: Cross multiply
    3,145.39x = 4,718.10 × 1,295.20
  4. Step 4: Simplify right side
    3,145.39x = 6,110,883.12
  5. Step 5: Solve for x
    x = 6,110,883.12/3,145.39
  6. Step 6: Final answer
    x = 1,942.81

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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.