Home / 3,078.70-4,617.87-1,436.40

Finding the Fourth Proportional to 3,078.70, 4,617.87 and 1,436.40

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Solution

The fourth proportional to 3,078.70, 4,617.87 and 1,436.40 is: 2,154.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,078.70 : 4,617.87 = 1,436.40 : x
  2. Step 2: Convert to fraction form
    3,078.70/4,617.87 = 1,436.40/x
  3. Step 3: Cross multiply
    3,078.70x = 4,617.87 × 1,436.40
  4. Step 4: Simplify right side
    3,078.70x = 6,633,093.70
  5. Step 5: Solve for x
    x = 6,633,093.70/3,078.70
  6. Step 6: Final answer
    x = 2,154.51

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1.5x scale

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.