Home / 3,159.45-4,739.59-1,078.89

Finding the Fourth Proportional to 3,159.45, 4,739.59 and 1,078.89

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Solution

The fourth proportional to 3,159.45, 4,739.59 and 1,078.89 is: 1,618.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.45 : 4,739.59 = 1,078.89 : x
  2. Step 2: Convert to fraction form
    3,159.45/4,739.59 = 1,078.89/x
  3. Step 3: Cross multiply
    3,159.45x = 4,739.59 × 1,078.89
  4. Step 4: Simplify right side
    3,159.45x = 5,113,496.79
  5. Step 5: Solve for x
    x = 5,113,496.79/3,159.45
  6. Step 6: Final answer
    x = 1,618.48

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1.5x scale

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.