Home / 3,159.44-4,742.40-1,429.28

Finding the Fourth Proportional to 3,159.44, 4,742.40 and 1,429.28

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Solution

The fourth proportional to 3,159.44, 4,742.40 and 1,429.28 is: 2,145.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,159.44 : 4,742.40 = 1,429.28 : x
  2. Step 2: Convert to fraction form
    3,159.44/4,742.40 = 1,429.28/x
  3. Step 3: Cross multiply
    3,159.44x = 4,742.40 × 1,429.28
  4. Step 4: Simplify right side
    3,159.44x = 6,778,217.47
  5. Step 5: Solve for x
    x = 6,778,217.47/3,159.44
  6. Step 6: Final answer
    x = 2,145.39

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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.