Home / 3,179.40-4,387.04-1,853.16

Finding the Fourth Proportional to 3,179.40, 4,387.04 and 1,853.16

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Solution

The fourth proportional to 3,179.40, 4,387.04 and 1,853.16 is: 2,557.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.40 : 4,387.04 = 1,853.16 : x
  2. Step 2: Convert to fraction form
    3,179.40/4,387.04 = 1,853.16/x
  3. Step 3: Cross multiply
    3,179.40x = 4,387.04 × 1,853.16
  4. Step 4: Simplify right side
    3,179.40x = 8,129,887.05
  5. Step 5: Solve for x
    x = 8,129,887.05/3,179.40
  6. Step 6: Final answer
    x = 2,557.05

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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.