Home / 1,730.80-2,390.48-1,143.96

Finding the Fourth Proportional to 1,730.80, 2,390.48 and 1,143.96

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Solution

The fourth proportional to 1,730.80, 2,390.48 and 1,143.96 is: 1,579.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,730.80 : 2,390.48 = 1,143.96 : x
  2. Step 2: Convert to fraction form
    1,730.80/2,390.48 = 1,143.96/x
  3. Step 3: Cross multiply
    1,730.80x = 2,390.48 × 1,143.96
  4. Step 4: Simplify right side
    1,730.80x = 2,734,613.50
  5. Step 5: Solve for x
    x = 2,734,613.50/1,730.80
  6. Step 6: Final answer
    x = 1,579.97

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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.