Home / 3,160.10-4,739.70-1,080.20

Finding the Fourth Proportional to 3,160.10, 4,739.70 and 1,080.20

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Solution

The fourth proportional to 3,160.10, 4,739.70 and 1,080.20 is: 1,620.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,160.10 : 4,739.70 = 1,080.20 : x
  2. Step 2: Convert to fraction form
    3,160.10/4,739.70 = 1,080.20/x
  3. Step 3: Cross multiply
    3,160.10x = 4,739.70 × 1,080.20
  4. Step 4: Simplify right side
    3,160.10x = 5,119,823.94
  5. Step 5: Solve for x
    x = 5,119,823.94/3,160.10
  6. Step 6: Final answer
    x = 1,620.15

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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.