Home / 2,509.49-3,463.22-1,390.55

Finding the Fourth Proportional to 2,509.49, 3,463.22 and 1,390.55

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Solution

The fourth proportional to 2,509.49, 3,463.22 and 1,390.55 is: 1,919.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,509.49 : 3,463.22 = 1,390.55 : x
  2. Step 2: Convert to fraction form
    2,509.49/3,463.22 = 1,390.55/x
  3. Step 3: Cross multiply
    2,509.49x = 3,463.22 × 1,390.55
  4. Step 4: Simplify right side
    2,509.49x = 4,815,756.30
  5. Step 5: Solve for x
    x = 4,815,756.30/2,509.49
  6. Step 6: Final answer
    x = 1,919.02

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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.