Home / 3,145.80-4,718.70-3,097.20

Finding the Fourth Proportional to 3,145.80, 4,718.70 and 3,097.20

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Solution

The fourth proportional to 3,145.80, 4,718.70 and 3,097.20 is: 4,645.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.80 : 4,718.70 = 3,097.20 : x
  2. Step 2: Convert to fraction form
    3,145.80/4,718.70 = 3,097.20/x
  3. Step 3: Cross multiply
    3,145.80x = 4,718.70 × 3,097.20
  4. Step 4: Simplify right side
    3,145.80x = 14,614,757.64
  5. Step 5: Solve for x
    x = 14,614,757.64/3,145.80
  6. Step 6: Final answer
    x = 4,645.80

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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.