Home / 3,179.39-4,387.43-1,782.05

Finding the Fourth Proportional to 3,179.39, 4,387.43 and 1,782.05

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Solution

The fourth proportional to 3,179.39, 4,387.43 and 1,782.05 is: 2,459.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.39 : 4,387.43 = 1,782.05 : x
  2. Step 2: Convert to fraction form
    3,179.39/4,387.43 = 1,782.05/x
  3. Step 3: Cross multiply
    3,179.39x = 4,387.43 × 1,782.05
  4. Step 4: Simplify right side
    3,179.39x = 7,818,602.15
  5. Step 5: Solve for x
    x = 7,818,602.15/3,179.39
  6. Step 6: Final answer
    x = 2,459.16

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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.