Home / 3,130.57-4,694.66-1,280.70

Finding the Fourth Proportional to 3,130.57, 4,694.66 and 1,280.70

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Solution

The fourth proportional to 3,130.57, 4,694.66 and 1,280.70 is: 1,920.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.57 : 4,694.66 = 1,280.70 : x
  2. Step 2: Convert to fraction form
    3,130.57/4,694.66 = 1,280.70/x
  3. Step 3: Cross multiply
    3,130.57x = 4,694.66 × 1,280.70
  4. Step 4: Simplify right side
    3,130.57x = 6,012,451.06
  5. Step 5: Solve for x
    x = 6,012,451.06/3,130.57
  6. Step 6: Final answer
    x = 1,920.56

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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.