Home / 3,145.10-4,714.65-1,170.20

Finding the Fourth Proportional to 3,145.10, 4,714.65 and 1,170.20

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Solution

The fourth proportional to 3,145.10, 4,714.65 and 1,170.20 is: 1,754.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.10 : 4,714.65 = 1,170.20 : x
  2. Step 2: Convert to fraction form
    3,145.10/4,714.65 = 1,170.20/x
  3. Step 3: Cross multiply
    3,145.10x = 4,714.65 × 1,170.20
  4. Step 4: Simplify right side
    3,145.10x = 5,517,083.43
  5. Step 5: Solve for x
    x = 5,517,083.43/3,145.10
  6. Step 6: Final answer
    x = 1,754.18

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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.