Home / 3,159.83-4,739.75-1,213.40

Finding the Fourth Proportional to 3,159.83, 4,739.75 and 1,213.40

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Solution

The fourth proportional to 3,159.83, 4,739.75 and 1,213.40 is: 1,820.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.83 : 4,739.75 = 1,213.40 : x
  2. Step 2: Convert to fraction form
    3,159.83/4,739.75 = 1,213.40/x
  3. Step 3: Cross multiply
    3,159.83x = 4,739.75 × 1,213.40
  4. Step 4: Simplify right side
    3,159.83x = 5,751,182.88
  5. Step 5: Solve for x
    x = 5,751,182.88/3,159.83
  6. Step 6: Final answer
    x = 1,820.10

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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.