Home / 2,319.69-3,480.45-1,020.25

Finding the Fourth Proportional to 2,319.69, 3,480.45 and 1,020.25

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Solution

The fourth proportional to 2,319.69, 3,480.45 and 1,020.25 is: 1,530.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,319.69 : 3,480.45 = 1,020.25 : x
  2. Step 2: Convert to fraction form
    2,319.69/3,480.45 = 1,020.25/x
  3. Step 3: Cross multiply
    2,319.69x = 3,480.45 × 1,020.25
  4. Step 4: Simplify right side
    2,319.69x = 3,550,929.11
  5. Step 5: Solve for x
    x = 3,550,929.11/2,319.69
  6. Step 6: Final answer
    x = 1,530.78

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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.