Home / 3,145.65-4,715.47-1,170.75

Finding the Fourth Proportional to 3,145.65, 4,715.47 and 1,170.75

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Solution

The fourth proportional to 3,145.65, 4,715.47 and 1,170.75 is: 1,755.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.65 : 4,715.47 = 1,170.75 : x
  2. Step 2: Convert to fraction form
    3,145.65/4,715.47 = 1,170.75/x
  3. Step 3: Cross multiply
    3,145.65x = 4,715.47 × 1,170.75
  4. Step 4: Simplify right side
    3,145.65x = 5,520,655.65
  5. Step 5: Solve for x
    x = 5,520,655.65/3,145.65
  6. Step 6: Final answer
    x = 1,755.01

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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.