Home / 5,114.60-7,667.40-2,480.78

Finding the Fourth Proportional to 5,114.60, 7,667.40 and 2,480.78

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Solution

The fourth proportional to 5,114.60, 7,667.40 and 2,480.78 is: 3,718.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,114.60 : 7,667.40 = 2,480.78 : x
  2. Step 2: Convert to fraction form
    5,114.60/7,667.40 = 2,480.78/x
  3. Step 3: Cross multiply
    5,114.60x = 7,667.40 × 2,480.78
  4. Step 4: Simplify right side
    5,114.60x = 19,021,132.57
  5. Step 5: Solve for x
    x = 19,021,132.57/5,114.60
  6. Step 6: Final answer
    x = 3,718.99

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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.