Home / 3,179.34-4,387.47-1,782.12

Finding the Fourth Proportional to 3,179.34, 4,387.47 and 1,782.12

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Solution

The fourth proportional to 3,179.34, 4,387.47 and 1,782.12 is: 2,459.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.34 : 4,387.47 = 1,782.12 : x
  2. Step 2: Convert to fraction form
    3,179.34/4,387.47 = 1,782.12/x
  3. Step 3: Cross multiply
    3,179.34x = 4,387.47 × 1,782.12
  4. Step 4: Simplify right side
    3,179.34x = 7,818,998.04
  5. Step 5: Solve for x
    x = 7,818,998.04/3,179.34
  6. Step 6: Final answer
    x = 2,459.31

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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.