Home / 2,078.75-3,119.40-846.17

Finding the Fourth Proportional to 2,078.75, 3,119.40 and 846.17

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Solution

The fourth proportional to 2,078.75, 3,119.40 and 846.17 is: 1,269.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.75 : 3,119.40 = 846.17 : x
  2. Step 2: Convert to fraction form
    2,078.75/3,119.40 = 846.17/x
  3. Step 3: Cross multiply
    2,078.75x = 3,119.40 × 846.17
  4. Step 4: Simplify right side
    2,078.75x = 2,639,542.70
  5. Step 5: Solve for x
    x = 2,639,542.70/2,078.75
  6. Step 6: Final answer
    x = 1,269.77

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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.