Home / 3,057.12-4,218.96-1,730.88

Finding the Fourth Proportional to 3,057.12, 4,218.96 and 1,730.88

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Solution

The fourth proportional to 3,057.12, 4,218.96 and 1,730.88 is: 2,388.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,057.12 : 4,218.96 = 1,730.88 : x
  2. Step 2: Convert to fraction form
    3,057.12/4,218.96 = 1,730.88/x
  3. Step 3: Cross multiply
    3,057.12x = 4,218.96 × 1,730.88
  4. Step 4: Simplify right side
    3,057.12x = 7,302,513.48
  5. Step 5: Solve for x
    x = 7,302,513.48/3,057.12
  6. Step 6: Final answer
    x = 2,388.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.