Home / 3,423.76-5,135.24-1,345.30

Finding the Fourth Proportional to 3,423.76, 5,135.24 and 1,345.30

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Solution

The fourth proportional to 3,423.76, 5,135.24 and 1,345.30 is: 2,017.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,423.76 : 5,135.24 = 1,345.30 : x
  2. Step 2: Convert to fraction form
    3,423.76/5,135.24 = 1,345.30/x
  3. Step 3: Cross multiply
    3,423.76x = 5,135.24 × 1,345.30
  4. Step 4: Simplify right side
    3,423.76x = 6,908,431.65
  5. Step 5: Solve for x
    x = 6,908,431.65/3,423.76
  6. Step 6: Final answer
    x = 2,017.79

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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.